National Archives, RG-19-LC, Box 13 A set of photographs of submarine chasers being built at the U.S. Navy yard in New York, 1917. Thanks to Dan Treadwell for submitting the images to The Subchaser Archives.

Photo Set - click to view large versions
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Construction of chasers at the navy yard, New YorkSC 10, SC 11 SC 12 and probabl
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SC 5, SC 6, SC 7, SC 8 and SC 9 under construction at the nany yard in New York.
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SC 57 and SC 58 under construction at the navy yard in New York.