AMERICAN STAMP DEALERS ASSOCIATION
The ASDA is the largest dealer organization in the world for professional stamp dealers. We have been a member since 1980. Michael E. Aldrich is currently on the Board of Directors of the ASDA serving in the position of director.
AMERICAN PHILATELIC SOCIETY
The APS is the largest collector based organization in the world. We have been a member of the society since 1975.
PHILATELIC TRADE REFERENCES
Harmers of New York Auctions
Robert A. Siegel Auctions
Bank of America in Carefree, Arizona