Sperry, Henry Muhlenberg books & textbook
Electric Interlocking Handbook by the Engineering Staff of the General Railway Signal Company: With an Introduction by Wilmer W. Salmon (Classic Reprint)
Forgotten Books /2019-08-27 Paperback / 439 Pages
isbn-10: 1332910319 / isbn-13: 9781332910311
Train Operation by Signal Indication: I the Two Principal Methods of Directing Train Movements II Directing Train Movements, by Signal Indication (Classic Reprint)
Forgotten Books /2024-01-26 Paperback / 36 Pages
isbn-10: 1527606171 / isbn-13: 9781527606173
“Collector’s Edition” Electric Interlocking Handbook 1913 [Premium Leather Bound]
General Railway Signal Company, Henry Muhlenberg Sperry, Paul Epler Carter
Rare Biblio /2024T Leather Bound / 450 Pages
