Post office telegraphs
Subtitle: diagrams of telegraph apparatus and connections, 1881
Series: Nineteenth Century Collections Online: Science, Technology, and Medicine, Part I; Nineteenth Century Collections Online: Science, Technology, and Medicine, Part I
Publisher: G.P.O.
Published: 1881
Place of publication: [London]
Language: eng
Number of pages: 44
Subjects: Telegraph; Handbooks, manuals; Postal service
Notes: Reproduction of the original from the Huntington Library.