Most notable, Heinmuller organized the Timing Contest Board of the National Aeronautic Association in in accordance with the chronometric specifications of the Federation Aeronautique Internationale, and served as their chief timer for over 30 years. In addition, he was an aero-philatelist and past president of the American Air Mail Society. An avid collector of aviation-related stamps and first day covers, Heinuller amassed over 5,000 zeppelin covers, 2,000 of which he donated to the National Postal Museum in the 1950s. His position as the official timer for the NAA and FAI gave him the opportunity to obtain signatures on first day covers which are highly sought after by collectors worldwide. The 1927 Lindbergh transatlantic flight and other pioneer flights were officiated by Heinmuller.
Credit goes to Swiss-born Heinmuller for securing Amelia Earhart’s proper FAI recognition of her record-setting flights. As he writes in Man’s Fight to Fly, “During 1932, I had considerable trouble in filling out all the documents for the various records she claimed, and it took until 1933 to fully satisfy the Contest Committee of the FAI. Only after I went to Paris and conferred with Monsieur Tissander, secretary of the association, were the records of Miss Earhart cleared.” (Excerpt from Endorsed by Earhart: How Amelia Financed Her Flying) Endorsed by Earhart has images of all FDCs related to Amelia's flight as well as further information
Man’s Fight to Fly is a chronology of aviation which includes exciting stories of the 16 most outstanding world’s record flights and over 200 documental photos. Pioneering flights include those made by Sikorsky, Byrd, Lindbergh, Chamberlin, Earhart, Post and Gatty, Hughes, and Pangborn. Heinmuller included a chronology of aviation (1483-1939) in the back of the book. Just to summarize, this is one of the most fascinating and collectible books I have related to aviation. It is an excellent reference for anyone involved in aviation research. It is a treasure among books.