Standing from left to right are John D. Home (Department of Communications of the American Legion), Howard Hughes (Managing Director of Production of RKO), and Edward Underwood (Department of Communications of Hollywood American Legion Motion Picture Post #43), in the late 1950s.
Description provided with image: "Temporary customs operation set up at Hughes Executive Terminal in Las Vegas In San Francisco by Scandinavian Airlines to process foreign passengers from 128 countries, here to attend the American Mining Congress. Las Vegas was designated an International Port of Entry in 1972.
Transcribed from attached press release: "HUGHES ROCK BIT TEST In a block-long laboratory at Houston, Texas, the Hughes Tool Company can simulate oil drilling conditions anywhere in the world. Here a Hughes bit is tested on a hard formation. Howard Hughes' father invented the rock bit in 1908 and the resulting business became the cornerstone on which Howard Hughes built his fabulous industrial empire in motion pictures, air transportation, aeronautical research and design, aircraft manufacture, electronics, armament and brewing."
Description provided with image: "Customs operation set up at Hughes West Terminal, Las Vegas, Nevada, in 1968. Las Vegas was designated as an International Port of Entry in 1972. At the time this operation was set up Scandinavian Airlines brought delegates from 128 foreign countries to Las Vegas for the American Mining Congress."
A section of Howard Hughes' "Spruce Goose" or "Flying Boat" being moved (with a police escort) from the Hughes Aircraft plant in Culver City, California to Terminal Island in the Los Angeles Harbor where the plane was assembled in June of 1946.