Typed onto a piece of paper given with the image: "Hughes' Plane Over Los Angeles, Cal. -- The world-girdling plane of Howard Hughes pictured from an American Airlines plane as it flew over Los Angeles as Hughes and four companions on the record-breaking flight arrive at Los Angeles for the ovation accorded them by proud Southern Californians. The Los Angeles City Hall is in the background. Credit Line (ACME) 8/2/38 NY

The Hughes administrative building, located at 6775 Centinela Avenue in Los Angeles, was where the HK-1 plane was built.