Babbage's occulting telegraph.
Contributors: Babbage, Henry Prevost.
Publisher: Printed by W. Clowes
Published: 1889
Place of publication: London
Language: eng
Number of pages: 18
Subjects: Military telegraph.; Signals and signaling.
Notes: Cover title; imprint from colophon.

Documents, edited by Henry P. Babbage, in support of the claims of Charles Babbage as the inventor of the occulting system of telegraphing.