Manual of recommended practice
Subtitle: complete to 1939 annual meeting
Publisher: The Association
Published: 1939
Place of publication: New York
Language: eng
Subjects: Railroads; Signaling; Chemins de fer; Signalisation
Notes: At head of title: Association of American Railroads. Operations and Maintenance Department. Engineering Division Signal Section.

Loose-leaf binder pages.

Includes: Instructions for inserting additions and revisions to manual.
Table of contents: title: [v. 1] Specifications, etc.; title: [v. 2] Drawings.