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Click on the image below to view: (US&S-Left / GRS-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 General Railway Signal Company
Type B Relays
General Information
Inspection and Maintenance
Handbook 18
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 Hall Signal Company
Alternating Current
Track Circuit
Installation
on
Long Island Railroad
Circular No. 12.		 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 General Railway Signal Company
GRS Color Light
& Position Light
Signals
Bulletin 144

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 Magnetic Signal Co.
Magnetic Wig Wag Crossing Flagman
~~~~~~~~~~~
Signal Accessories and Supplies


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.
Image Copyright ZCG US 2011
Interlocking Machine Photographs		 Image Copyright ZCG US 2011
Miscellaneous Company Photographs

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 Linen Tower 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


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


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


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