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Click on the image below to view: (HALL/NATIONAL-Left / TAYLOR/FEDERAL/PNEUMATIC/JOHNSON-Right)
photo courtesy of Zachary Gillihan The Hall Signal Company
Catalogue No. 4 and Price List
...of...
Automatic Electric Disc
...and...
Semaphore Signaling Apparatus
1901		 photo courtesy of Zachary Gillihan Taylor Signal Company
Catalogue No. 1
The Electric Interlocking
System
1902
photo courtesy of Zachary Gillihan The Hall Signal Company
Catalogue No. 6 and Price List
The Hall Electric Semaphore
Style "F", Electric Disc Signals,
Switches, Tower Indicators,
Switch Boxes, Ect.
1906		 photo courtesy of Zachary Gillihan The Federal Railway Signal Company
Catalogue
Of
The Federal Railway Signal Co.
1905
photo courtesy of Zachary Gillihan The Hall Signal Company
Alternating Current
Track Circuit
Installation
on
Long Island Railroad
Circular No. 12.		 photo courtesy of Zachary Gillihan Pneumatic Signal Company
Take The Safe Course
Bulletin No. 7
Pre 1905
photo courtesy of Zachary Gillihan National Switch and Signal Company
Illustrations of
Standard Apparatus for
Interlocking and
Block Signals
1894		 photo courtesy of Zachary Gillihan Johnson Railroad Signal Company
Catalogue of
Interlocking and Railroad Signaling Appliances
Est. 1889
photo courtesy of Zachary Gillihan National Switch and Signal Company
'96
Interlocking Machine
1896
photo courtesy of Zachary Gillihan The Hall Signal Company
The STYLE "K"
Automatic Signal
1912
photo courtesy of Zachary Gillihan The Hall Signal Company
The Hall-Electro-Gas
Automatic-Semaphore Signal
Circular 10
1907
photo courtesy of Zachary Gillihan The Hall Switch and Signal Company
Section 34-A-19
Style "L" Signal
Mechanisms

Click on the image below to view: (US&S-Left / GRS-Right)
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
Swissvale, Pa.
1909
Electric Interlocking
Catalogue		 photo courtesy of Zachary Gillihan General Railway Signal Company
Type B Relays
General Information
Inspection and Maintenance
Handbook 18
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
Swissvale, Pa.
Volume 2
Electric Interlocking
Catalogue
1911		 photo courtesy of Zachary Gillihan General Railway Signal Company
Alternating Current Signals
On The Southern
Bulletin 126
December 1913
photo courtesy of Zachary Gillihan Union Switch and Signal Company
U-5007
Installation and
Adjustment of
Position Light Signal		 photo courtesy of Zachary Gillihan General Railway Signal Company
Absolute
Permissive
Block System
Bulletin 128A
photo courtesy of Zachary Gillihan Union Switch and Signal Company
U-5012
Installation and Maintenance
of
Style "P-2"
Color Light Signal		 photo courtesy of Zachary Gillihan General Railway Signal Company
Modern Crossing
Protection By G-R-S
Type XA and XB Signals
Bulletin 165
photo courtesy of Zachary Gillihan Union Switch and Signal Company
U-5034
Installation and Maintenance of
Styles H and H-2 Searchlight Signals
with Permanent Magnet Field Structure		 photo courtesy of Zachary Gillihan General Railway Signal Company
The NX
System of
Electric Interlocking
Bulletin 167
photo courtesy of Zachary Gillihan Union Switch and Signal Company
U-5037
Life, Installation and
Replacement of
Railway Light Signal
Lamps		 photo courtesy of Zachary Gillihan General Railway Signal Company
Economical Protection
With
Slide Detector Fences
Bulletin 168
photo courtesy of Zachary Gillihan Union Switch and Signal Company
U-5429
Installation of Inclined
Cover Glasses with
Phankill Units
on Existing Color Light Signals		 photo courtesy of Zachary Gillihan General Railway Signal Company
Centralized
Traffic
Control
Bulletin 169
photo courtesy of Zachary Gillihan Union Switch and Signal Company
Bulletin 45
A System of Automatic Block
Signaling for Signgle
Track Operation		 photo courtesy of Zachary Gillihan General Railway Signal Company
Speed and Simplicity
in Train Direction
First NX Interlocking in the U.S.A.
Bulletin 172
photo courtesy of Zachary Gillihan Union Switch and Signal Company
Bulletin 73
Electro-Pneumatic
Interlocking		 photo courtesy of Zachary Gillihan General Railway Signal Company
Types MD and ME
Dwarf Signals
Two-Indication
Color Light
Bulletin 175
photo courtesy of Zachary Gillihan Union Switch and Signal Company
U-5006
Maintenance
of
Style "T-2" D.C. Signals		 photo courtesy of Zachary Gillihan General Railway Signal Company
SC
Signal
Bulletin 176
photo courtesy of Zachary Gillihan Union Switch and Signal Company
U-5013
Maintenance
of
Style "B"
a-c. and d-c.
Signals		 photo courtesy of Zachary Gillihan General Railway Signal Company
Model 9A
Electric
Switch
Lock
Bulletin 181
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
1894
A Catalogue
Of The
Devices and Their Parts
 photo courtesy of Zachary Gillihan General Railway Signal Company
1905
Section 1
Electric Interlocking
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
The Union Electric
Semaphore Signal
Bulletin No. 6		 photo courtesy of Zachary Gillihan General Railway Signal Company
1905
Section 2
Mechanical Interlocking
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
1907
Catalogue of
Pennsylvania Railroad
Standard Appliances		 photo courtesy of Zachary Gillihan General Railway Signal Company
1909
Bulletin No. 112
Controlled Manual Block System
Station Block Instruments
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
A Catalogue and Price List
of
Interlocking and
Signaling Devices
1909		 photo courtesy of Zachary Gillihan General Railway Signal Company
Type SA
Color-Light
Signal
Handbook 29
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
Swissvale, Pa.
1907
Electro-Pneumatic
Catalogue		 photo courtesy of Zachary Gillihan General Railway Signal Company
Railway Signal
Engineering
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
Swissvale, Pa.
1909
Electro-Pneumatic
Catalogue
Volume 2		 photo courtesy of Zachary Gillihan General Railway Signal Company
1927
Bulletin 154
Centralized
Traffic Control
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
Bulletin 124
Turning Minutes
Into
Dollars		 photo courtesy of Zachary Gillihan General Railway Signal Company
All-Relay
Interlocking
Systems
Bulletin 188
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
The Signal
In The
Cab
Bulletin 144		 photo courtesy of Zachary Gillihan General Railway Signal Company
Type SC
Color-Light
Signal
Handbook 23
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
Centralized
Traffic Control
Union CTC
Bulletin 148		 photo courtesy of Zachary Gillihan General Railway Signal Company
GRS Color Light
& Position Light
Signals
Bulletin 144
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
Operation of Trains by Signal
Indication on Single Track
Central of Georgia
Bulletin 127		 photo courtesy of Zachary Gillihan General Railway Signal Company
1911
Bulletin No. 120
Automatic Signaling
for
Electric Railways
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
Automatic Block Signaling
Washington, Baltimore & Annapolis Electric R.R.
Bulletin 61		 photo courtesy of Zachary Gillihan General Railway Signal Company
Type S and SA
Color-Light Signals
Installation, Operation
and Maintenance
Booklet No. 8
January 1929
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
The Table Interlocker
Bulletin 110		 photo courtesy of Zachary Gillihan General Railway Signal Company
1908
Section 5
Automatic Block Signaling For Steam Roads
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
Swissvale, Pa.
1909
Catalogue of
Electric Crossing Bell
Appliances		 photo courtesy of Zachary Gillihan General Railway Signal Company
1910
Bulletin No. 115
Supplementing Catalogue, Sections 1, 2, and 5
Model 2A Signal
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
Alternating Current
Signaling
1915
 photo courtesy of Zachary Gillihan General Railway Signal Company
1911
Bulletin No. 115-A
Supplementing Catalogue, Sections 1, 2, and 5
Model 2A Signal
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
Catalogue of
Interlocking
May 1st, 1883		 photo courtesy of Zachary Gillihan General Railway Signal Company
1911
Bulletin No. 115-B
Block Signaling
for
High Speed Interurban Lines
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
Catalogue of
Automatic Rail Circuit Block, Draw-Bridge,
Crossing and Station Signaling
May 1st, 1883		 photo courtesy of Zachary Gillihan General Railway Signal Company
1914
Bulletin No. 115-C
GRS
Model 2A
Signal
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
Centralized Traffic Control
Catalog
Section "T"
No. 306 July, 1941		 photo courtesy of Zachary Gillihan General Railway Signal Company
The Way Is Clear
Bulletin 124
October, 1912
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
Catalogue of Interlocking
and Signaling Devices
1902
Section 1
Mechanical Interlocking Machines
and Ground Lever Stands		 photo courtesy of Zachary Gillihan General Railway Signal Company
A Powerful
Signal
Indication
Type SA
Searchlight Signal
Bulletin 163
February, 1932
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
Catalogue of Interlocking
and Signaling Devices
1902
Section 2
Mechanical Ground Connections
and Leadout Appliances		 photo courtesy of Zachary Gillihan General Railway Signal Company
Assemblies
Signal
Equipment
Sections 5 - 97
1959 - 1969
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
Catalogue of Interlocking
and Signaling Devices
1902
Section 4
Mechanical Interlocking
Signals		 photo courtesy of Zachary Gillihan General Railway Signal Company
Switch Machines
For Your
Main Line Switches
Bulletin 161
July 1930
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
Catalogue of Interlocking
and Signaling Devices
1902
Section 11
Electric Locks, Electric Slots,
Hand Releases and Time Locks		 photo courtesy of Zachary Gillihan General Railway Signal Company
XB Crossing Signals
Have
Strong Backlight Indications
F-O34
October 1931
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
Catalogue of Interlocking
and Signaling Devices
1902
Section 12
The Union Electric Semaphore
and
The Union Disc Signal		 photo courtesy of Zachary Gillihan General Railway Signal Company
1901
Bulletin No. 105
Supplementing Catalogue, Sections 1, 2 and 5
Outlying Switch Lock
Model 1 Form A
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
A Story of
Two Wires
Bulletin 112
June-1927
Reprinted October-1927		 photo courtesy of Zachary Gillihan General Railway Signal Company
Type K Relays
Bulletin 162
August 1931
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
Union Electric Semaphore
Equipped With
Style "S" Mechanism
1911
Bulletin No. 42		 photo courtesy of Zachary Gillihan General Railway Signal Company
Alternating-Current
Block Signals on the
Southern Railway System
Bulletin 146
October 1925
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
Interborough Rapid Transit
Company, New York.
Electro-Pneumatic Interlocking
and Signaling

Bulletin No. 21
Revised Print		 photo courtesy of Zachary Gillihan General Railway Signal Company
A.P. Block System
for Single Track
Steam Railroads
Bulletin 128
March 1912
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
Safety Efficiency Economy
The TDB System

Bulletin No. 69
February 1914		 photo courtesy of Zachary Gillihan General Railway Signal Company
Model 2A Signal
Handbook 2 Pre-1918
Booklet 1003A Post-1918
March 1914
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
Style "T-2" Signals
Bulletin No. 67
October 1913		 photo courtesy of Zachary Gillihan General Railway Signal Company
Electric
Interlocking
Handbook (First Print)
1913
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
Union Three Aspect Flagman
Style "DW"
Bulletin No. 86 with
Supplement No. 1
December 1916
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
Training Course In
Railway Signal
Engineering
Bulletin No. 140
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
Multiple Unit
Electric Interlocking
System
Bulletin No. 49
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
Remote Control
Bulletin 152
August, 1937
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
The Type "F" System
of Electric Interlocking
Bulletin 100
November, 1922
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
"Union" Automatic
Continuous
Train Control
Bulletin 105
October, 1929
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
Electric
Train Staff
Catalogue
September, 1907
photo courtesy of Zachary Gillihan The Union Switch and Signal Company
Operating Trains Without
Train Orders
Bulletin 150
April, 1935

Magnetic Signal Company Books:
photo courtesy of Zachary Gillihan Magnetic Signal Co.
Magnetic Wig Wag Crossing Flagman
~~~~~~~~~~~
Signal Accessories and Supplies		 photo courtesy of Zachary Gillihan Magnetic Signal Co.
Installation and Maintenance Instructions
For All Types of Magnetic Flagmen
photo courtesy of Zachary Gillihan Magnetic Signal Co.
"Magnetic WigWag Flagman"
Railroad Highway Grade Crossing Signals
Section - A
Section - J
1940 Catalog		 photo courtesy of Zachary Gillihan Magnetic Signal Co.
Number 1731
Iron Offset Bracket
For Mounting
Wigwag Mechanism
photo courtesy of Zachary Gillihan Magnetic Signal Co.
Number JH-3570
Twin Lamp Unit Assembly
For Two Way Indication
Wigwag Banners		 photo courtesy of Zachary Gillihan Magnetic Signal Co.
Magnetic Wig Wag Crossing Flagman
~~~~~~~~~~~
Signal Accessories and Supplies
Catalogue C

Other Books:
photo courtesy of Zachary Gillihan Signal Indication Slide Card
New York
New Haven
and
Hartford Railroad		 photo courtesy of Zachary Gillihan Exide
Signal Power
for
the Maintainer
photo courtesy of Zachary Gillihan Saxby & Farmer, Ltd.
Control of
Single Line
Railways
By The Webb-Thopmson
Miniature Train Staff Apparatus
"S" Type
Catalogue C (1914 Edition)		 photo courtesy of Zachary Gillihan Western Railroad Supply Company
Railroad
Equipment

Signaling
Communications
Maintenance of Way
Mechanical
photo courtesy of Zachary Gillihan Williamsport & Susquehanna Division
Instruction and Examination of Signals
May 1st, 1914		 photo courtesy of Zachary Gillihan The Adams & Westlake Company
Electric Signal Lamp Equipped with
Decentered CORNING-LEBBY Mirror
Adlake "LEBBY Focusing Device" and
6 3/8 in. 25* Ruby Deflecting Cover Glass
photo courtesy of Zachary Gillihan Griswold Signal Company
Flashing Light
Rotating Banner
Signals
A - Section		 photo courtesy of Zachary Gillihan Griswold Signal Company
Minneapolis, Minn

Rotating Banner Diagrams and Prints
photo courtesy of Zachary Gillihan Chicago Railway Signal and Supply Company
1914
Catalogue and Price List
of Electric and Mechanical Railway Signals
Highway Crossing Alarms
Signaling Materials and Signal Accessories		 photo courtesy of Zachary Gillihan The Railroad Signal Supply Company
Railway
Signal
Supplies

Catalog No. 32
1895 - 1927
photo courtesy of Zachary Gillihan Federal Telephone and Radio Company
A Division of IT&T
IT&T
Sequence Switch
Interlocking System		 photo courtesy of Philip Martin Griswold Signal Company
Flashing Light
Signals
D
Section
Scanned by Philip Martin
photo courtesy of Zachary Gillihan United States Electric Signals
Parts For:
K and K2		 photo courtesy of Philip Martin Louisville Frog, Switch and Signal Company
Successor to
Southern Signal Corporation
Successor to
Peerless Manufacturing Corporation
Catalogs
Scanned by Philip Martin
photo courtesy of Zachary Gillihan The Hutchinson Train Indicators
National Indicator Company
New York, U.S.A.		 photo courtesy of Zachary Gillihan LOCKING
By
Frederick C. Lavarack
1907


Click on the Section Below to view the Plate Section: (US&S-Left / GRS-Right)
The ones on the index pages are the sections that I have, if you can not click on them, then I have yet to scan them and are working on it.

Photos from the St. Louis-San Francisco Railway Company, Testing Dept.
photo courtesy of Zachary Gillihan Old Frisco Photos

The ZCG Collection of Union Switch and Signal Company Photographs.
In our collection is a large lot of 8x10 negatives that was taken by US&S to be used in publications and advertisements. The negatives are broken into series of negatives but a cataloging number. There are several thousand negatives in this collection. Saved from the US&S dumpsters I am told, I have cataloged all the negatives which I own and have started scanning them. This was a greatly time consuming process and involved a good amount of money to complete. Also please note that the descriptions of the negatives were directly copied from the outside of the negative envelope and contain spelling errors and errors of locations. I have no plans to correct these errors and will leave them as they appear. Enjoy! Links to the Scans:

Negative Series: #### (4 Digit)

Negative Series: 95-C-#### (95-C)

Negative Series: ## (2 Digit)

Negative Series: ##### (5 Digit)
 photo courtesy of Zachary Gillihan

American Railway Signaling Principles and Practices
I currently have all these but Chapter 23 and 25, I am in the process of scanning these, if they are underlined then they have been scanned and you can open them. Enjoy!

Chapter I History and Development of Railway Signaling
Chapter II Symbols, Aspects and Indications
Chapter III Principles and Economics of Signaling
Chapter IV Centralized Traffic Control
Chapter V Batteries
Chapter VI Direct Current Relays
Chapter VII Non-Coded Direct Current Track Circuits
Chapter VIII Transformers
Chapter IX Rectifiers and Battery Chargers
Chapter X Alternating Current Relays
Chapter XI Alternating Current Track Circuits
Chapter XII Semaphore Signals
Chapter XIII Light Signals and Light Signal Lamps
Chapter XIV Definitions
Chapter XV Automatic Block Systems
Chapter XVI Interlocking
Chapter XVII Mechanical and Electro-Mechanical Interlocking
Chapter XVIII Electro-Pneumatic Interlocking
Chapter XIX Electric Interlocking
Chapter XX Interlocking Circuits
Chapter XXI Hump Yard Systems
Chapter XXII Manual Block System and Rules Governing Opposing and Following Movement of Trains by Block Signals - Fundamental Theory of Direct Current
Chapter XXIII Railroad Highway Grade Crossing Protection
Chapter XXIV Power Distribution Systems and Lightning Protection
Chapter XXV ??? ***MISSING***
Chapter XXVI Relay Interlocking

Railroad Signal Advertisements
These are scanned at 600 dpi so they are rather large files!


Railway Age
01/04/1941
Railway Age
##/##/####
Railway Age
07/03/1937
Railway Age
01/12/1953

Railway Age
##/##/####
Railway Age
07/13/1946
Railway Age
##/##/####
Railway Age
07/26/1941

Railway Age
11/14/1942
Railway Age
03/10/1926
Railway Age
11/04/1950
Railway Age
01/22/1938

Railway Age
03/14/1931
Railway Age
03/06/1926
Railway Age
06/18/1927

Conrail Documents


Conrail Standards
Conrail Position
Light Signal
Aspects
Conrail
Albany Division
Interlockings


Original Linen Interlocking Diagrams
photo courtesy of Zachary Gillihan
The Standard Railroad Signal Company Prints		 photo courtesy of Zachary Gillihan
The Federal Railway Signal Company Prints
photo courtesy of Zachary Gillihan
General Railway Signal Company Prints


Original Railroad Linen Diagrams
photo courtesy of Zachary Gillihan
I.C.R.R.
Ashkum, Illinois
Interlocking Towers
Elevations & Section - Page 1 of 2
Plans & Details - Page 2 of 2
May-16-1923
photo courtesy of Zachary Gillihan
Penna. Railroad Signal Linens


Railroad Interlocking Diagram Books
The Pennsylvania Railroad
Philadelphia Region
Atlantic District
Interlockings
The Pennsylvania Railroad
Eastern Region
Chesapeake District
Block Stations, Interlockings, ETC.


Erie-Lackawanna Railroad Company Signal Prints


A.T. & S.F. Railroad Signal Prints


Chicago Great Western Railway Signal Prints

Louisville & Nashville Railroad Signal Prints

Baltimore and Ohio Railroad Signal Prints

Illinois Central Gulf Railroad Signal Prints

The Alton Railroad Signal Prints


Railroad Signal Videos
Click on the Image to see the video.
New York Central System:
The Railroad Signal
Part I
From the ZCG Collection
New York Central System:
The Railroad Signal
Part II
From the ZCG Collection


C.C.C. ST. L. RY. Interlocking Diagrams
photo courtesy of Zachary Gillihan
C.C.C. & ST.L. RY.
Manipulation Chart - Durbin, Ohio
October 17, 1918


Misc Union Switch & Signal Company Documents
photo courtesy of Zachary Gillihan
The Union Switch & Signal Company
Style NL-15, 60 Cyc, 50 VA, Spec: 1174
Voltage Table and Connection Diagram
0-30-9		 photo courtesy of Zachary Gillihan
The Union Switch & Signal Company
Style NL-15, 60 Cyc, 20 VA, Spec: 1413A
Voltage Table and Connection Diagram
0-30-10
photo courtesy of Zachary Gillihan
The Union Switch & Signal Company
Style W-10, 60/100 Cyc, 300 VA, Spec: 2118
Voltage Table and Connection Diagram
0-30-15


Misc General Railway Signal Company Documents
photo courtesy of Zachary Gillihan
General Railway Signal Company
2A Signal, 110 Volt - 3 Position, Dynamic Indication, Upper Quadrant
Instructions Covering:
Assembly
Adjustment
Testing


Relay PDF Files

GRS Section 65, Type K Relays
GRS Section 62, Type B Relays, Plug-In Type

Signal PDF Files

Safetran Systems Corporation
Section 15
Wayside Signals
WABCO
Section Signals
Railway Signal Equipment