Two pamphlets from General Railway Signal Company. (1) Centralized Traffic Control, Type K, Class M, Handbook 28. 1944. 54pp. Stiff wrappers. FINE copy. (2) GRS Car Retarder System, Maintenance Instructions, 1949. Handbook 35. 7"x 5", 90pp, illustrated, several folding plates. Metal spine binding. Stiff wrappers. FINE copy. Both are quite lovely, and fresh. Provenance for both: Library of Congress, with their rubber stamp on the last page of the pamphlet. Scarce.

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D�tails bibliographiques

Titre

"Centralized Traffic Control, Type K, Class M, Handbook 28" WITH "GRS Car Retarder System, Maintenance Instructions, Handbook 35"--2 scarce items

�diteur

General Railway Signal Company, Rochester, NY

Date de parution

1944

Reliure

Soft cover

�tat de l'article

Fine

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Description de la librairie

We have been in business since 1985--including a store in Georgetown, D.C. from 1985-2002--specializing in significant and hard-to-find works in modern (say, after 1850) physics, math, astronomy, and technology.

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JF Ptak Science Books
NC, U.S.A.

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