Career
Thompson had a wide range of interests in stamp collecting, but is best known for his specialized interest in airmail covers of the United States. Thompson was very active in the philatelic community. He was president of the American First Day Cover Society from 1964 to 1966, and served the Bureau Issues Association (now the United States Stamp Society) as president and chairman of the Board of Governors.
He also served the American Air Mail Society as its president in 1973 and 1974, and the Society of Philatelic Americans as a director from 1972 to 1977.
He served the society in various ways, including serving as president at times and as chairman of its annual Baltimore Philatelic Exhibition (BALPEX) stamp show.
