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.
Handwritten description provided on back of image: "Dedication of McCarran Field, March 15, 1941. Selected in 1928 as the airport for the western Air Express on its regular (?) between Los Angeles and Salt Lake City. From the tiny Douglas M-2 flown by the original "Four Hasmen" of WAE (Westcliff Airport Express), Jamie (?) James, Fred Kelly I, Al De Garmes (?) and Maruice Graham (?)." Site Name: McCarran Field (Las Vegas, Nev.)
Howard Hughes in the Lockheed 14 in Los Angeles, California. Typed on a piece of paper attached to the image: "Howard Hughes off on first leaf of flight to Paris. Los Angeles, Cal. -- Howard Hughes, Millionaire oil man and speed flyer, at the controls of his huge Lockheed "Flying Laboratory" as it took off from here for its leisurely flight to New York, from where Hughes and his crew will fly to Paris and perhaps around the world. 7/4/1938 Credit line (ACME)."
A picture of Bullfrog-Goldfield no. 13, August 15, 1908 after wreck with T&T passenger southbound at Evelyn, California. Inscribed on photo is: "Eng. 13 after the wreck. Aug. 9th -08. T. & T. R.R. F.G.P."