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Telephone industry
Equipment
7
name
Rosenfeld, Morris, 1884-1968
7
collection
"The Pageant of America" Collection
7
genre
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Photographs
division
Wallach Division: Photography Collection
7
type
still image
7
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7 results found
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: Photographs
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Topic
: Telephone industry
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Topic
: Equipment
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General view of machine switc…
Line finder frame.
Frequence switch assembly, ma…
Incoming trunk position in a …
Translator frame : apparatus …
Pulse machines : an ingenious…
Senders : the brain of the ma…