Navy Training at the U. of I. | University of Illinois Archives
Caption on back reads, "The blinker gun with which visual signals are transmitted from ship to ship of the Navy without the signals being visible to anyone except on the vessel being signalled [sic] is one of the devices with which sailors are trained in the U.S. Naval Training School at the University of Illinois."
Found in Box MIL - 5, Folder MIL - 5 - 6 Physical Training
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