Capt. John Taylor Gause Stapler was involved in the founding of the submarine base a New London, at which the subchaser crews received training, and commanded the 8th Submarine Division.
This photo set, from his collection, includes photos of the overseas journey, including a shot of subchasers at Ponta Delgada, Azores.
Thanks to Elizabeth Steen (who is related to Capt. Stapler) for submitting the photos for scanning.