The search for safety
Subtitle: a history of railroad signals and the people who made them
By: by Mary Brignano and Hax McCullough ; with graphic design by Sid Navratil.
Contributors: McCullough, Hax.; American Standard, inc. Union Switch & Signal Division.
Publisher: Union Switch & Signal Division, American Standard
Published: 1981
Place of publication: [New York, N.Y.]
Language: eng
Number of pages: 199
Subjects: Railroads -- Signaling -- History.
Notes: Bibliography: p. 197-199.