Historical Signals and Semaphores
Historical Signals and Semaphores

Author: U S Games Systems

Publisher: U S Games Systems

Published: 2006-10-31

Total Pages: 60

ISBN-13: 9781572815636

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Inspired by actual WWII signal training cards, a double deck of playing cards and companion booklet highlight this handsome gift set. The 48-page illustrated booklet recounts the fascinating historical background of the signal flag, semaphore, phonetic alphabet, and Morse code systems featured in the decks. Packaged in a durable and attractive case, the set includes a recreated Morse code flasher device, a signal training indicator wheel, a full-color poster, and other items of historical interest.

Classic Railroad Signals
Classic Railroad Signals

Author: Brian Solomon

Publisher: Voyageur Press (MN)

Published: 2015-05-08

Total Pages: 163

ISBN-13: 0760346925

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Classic Railroad Signals digs into nearly every piece of train signaling hardware with archival and modern photos showing signals from around America.

Signal Boxes and Semaphores
Signal Boxes and Semaphores

Author: Gordon D. Webster

Publisher: Amberley Publishing Limited

Published: 2016-11-15

Total Pages: 185

ISBN-13: 1445656183

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Explores the decline of mechanical signalling in the UK.

Railroad Signaling
Railroad Signaling

Author: Brian Solomon

Publisher: Voyageur Press

Published: 2003-11-01

Total Pages: 160

ISBN-13: 1616738979

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From the 1830s to today, the railroad industry has developed myriad complex mechanisms to help keep North America’s railroad rights-of-ways safe, efficient, and relatively accident-free. In this paperback rerelease of the successful 2003 title, the otherwise-arcane world of railroad signaling is explained in concise language and brought to life with nearly 200 fantastic photographs that depict signaling history and all aspects of modern operations. Author and photographer Brian Solomon brings his wealth of knowledge and photographic talent to a subject that has not often been tackled in book form, yet is integral to the American railroad experience.

The History of the Bakerloo Line
The History of the Bakerloo Line

Author: Clive D W Feather

Publisher: The Crowood Press

Published: 2020-10-26

Total Pages: 370

ISBN-13: 1785007467

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The Bakerloo is the dull brown line on London's iconic tube map. It doesn't have the multiple branches of the Northern or District Lines, the loops of the Piccadilly or the Central, or the puzzling shape of the non-circular Circle. But its nondescript appearance belies a history encompassing fraud in the boardroom and drama in the courtroom for a line first conceived by sports enthusiasts and finished by Chicago gangsters. With over 120 photographs, this book provides a history of its development from obtaining Parliamentary permission and raising finance through to geology and construction techniques. It details its operation including rolling stock, signalling, stations and signage from the beginning to the current day. The impact of the two World Wars is revealed and it remembers some of the accidents and tragedies that befell the line. Finally, the book describes its evolution up to the present day and beyond.

Operating Systems
Operating Systems

Author: Remzi H. Arpaci-Dusseau

Publisher: Createspace Independent Publishing Platform

Published: 2018-09

Total Pages: 714

ISBN-13: 9781985086593

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"This book is organized around three concepts fundamental to OS construction: virtualization (of CPU and memory), concurrency (locks and condition variables), and persistence (disks, RAIDS, and file systems"--Back cover.