Clemence Ast. Astronomer file records from the reorder. On the right is the time signal transmitting clock connected by direct wire to Arlington and Annapolis. All signals are broadcast from there and also from San Francisco to Honolulu and Balboa Abstract/medium: 1 negative : glass ; 4 x 5 in. or smaller

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Photo credit: © Alpha Stock / Alamy / Afripics
License: Licensed
Model Released: No

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