Henry M. Goodkind
Henry M. Goodkind of New York City, was a distinguished American philatelist who specialized in the study of air mail postage stamps of the world, and published numerous articles and studies on the subject.
Philatelic literature
Goodkind was a prolific writer of philatelic literature on air mail stamps, writing over two hundred and fifty articles on the subject. He also wrote a number of books on air mail philately:- United States: The First Air Mail Stamp
- United States: The 24c Air Mail Inverted Center of 1918
- United States: RF Overprints on Air Mail Stamps and Stationery 1944-1945
- United States: The 5c Beacon Air Mail Stamp of 1928