Membership
Barker was a specialist in the stamps and postal history of Belgium, a member of the Académie de Philatélie de Belgique, and president of the Lincoln Philatelic Society and the Belgian Study Circle.
Barker was a specialist in the stamps and postal history of Belgium, a member of the Académie de Philatélie de Belgique, and president of the Lincoln Philatelic Society and the Belgian Study Circle.
