MEPSI
Mexico Elmhurst Philatelic Society International, better known as MEPSI, is an organization devoted to the study of all aspects of the postal history of Mexico since 1952. MEPSI became a non-profit corporation under Illinois statues on February 6, 1957 and is a tax exempt educational organization under Internal Revenue Code section 501(c)(3). MEPSI is American Philatelic Society affiliate #43. MEPSI has the largest following in Mexico and the United States. However, the ca. 650 members are spread over more than 27 countries. Society services. MEPSI offers the following services to its members: