Back of the postcard. Some of the wording is not readable. It looks like the postcard was sent to a woman, Miss Stewart of California, from Paul Smith.
Howard Hughes under the propeller of his Douglas DC-3 aircraft. The photo was taken right before or after his first flight since the nearly fatal XF-11 crash in 1946.
Wilbur Clark facing camera at round table, center at a formal dinner at the Astor Hotel, New York City, 1958. (credit: Bill Mark, Park Sheraton Hotel, NYC).
Description given with photo: "Hughes Flying Boat - Port bow in dry dock at Terminal Island. Howard Hughes and Jack Jerman on platform in background. Long Beach, Cal."
Transcribed from attached press release: "Howard Hughes, on the flight deck of his flying boat, world's largest airplane, discusses with his flight engineer and radio operator, plans for tomorrow's taxi testing of the 400,000 pound craft. The flight deck occupies the upper level in the nose of the 219-foot hull, Nov 1, 1947."