I have a slightly odd hobby. I really enjoy stamp collecting.
Stamp collecting
Stamp collecting is the collecting of postage stamps and related objects. It is related to philately, which is the study of stamps. It has been one of the world's most popular hobbies since the late nineteenth century with the rapid growth of the postal service, as a never-ending stream of new stamps was produced by countries that sought to advertise their distinctiveness through their stamps.
Collecting.
Stamp collecting is generally accepted as one of the areas that make up the wider subject of philately, which
40+ local chapters. 
The American Topical Association is an affiliate of the American Philatelic Society.
Member Services.
The ATA offers a variety of member services to Topical Collectors so that they may enjoy to the fullest extent the hobby of Topical
Stamp collecting. The ATA's office is located at 100 N Division St, Carterville, IL 62918. Among the services included in annual dues payment are:
1) Six bi-monthly issues of "Topical Time". "Topical Time" is the official