Items
Creator is exactly
Submarine Defense Assn
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[MF18AD], Telegram from Submarine Defense Assn to Thomas Alva Edison, August 2nd, 1917 1917-08-02 -
[MF18AG], Letter from Harold Peckham Hobart, Submarine Defense Assn to Thomas Alva Edison, August 3rd, 1917 1917-08-03