| 1884 | St. Louis Philatelic Society is formed | |||||
 | 1886 | A committee met in New York City on September 13, 1886, and adopted the name “American Philatelic Association” (APA) for the newly formed organization. The following day, John K. Tiffany, a prominent St. Louis attorney, and ardent philatelist, was elected president, a position he held until 1896. St. Louis Philatelic Society becomes Chapter #4 of the American Philatelic Association. | ||||
| 1889 | St. Louis hosts the 4th Annual American Philatelic Association Convention. | |||||
| 1897 | American Philatelic Association changes its name to American Philatelic Society but only for a few months but returns it back to the American Philatelic Association. | |||||
| 1908 | American Philatelic Association again changes its name to American Philatelic Society permanently. | |||||
| 1919 | St. Louis hosts the 34th Annual American Philatelic Society Convention. | |||||
| 1927 | St. Louis hosts the 42nd Annual American Philatelic Society Convention. | |||||
 | 1935 | Mound City Stamp Club hosts the Society of Philatelic Americans Convention: Hotel Melbourne, St. Louis, MO, August 22-25, 1935. | ||||
 | 1940 | Mound City Stamp Club hosts Jr. Stamp Exposition: Hotel Melbourne, St. Louis, MO, May 4-6, 1940. | ||||
| 1952 | Mound City Stamp Club becomes Chapter #344 of the American Philatelic Society. | |||||
| 1956 | St. Louis hosts the 70th Annual American Philatelic Society Convention. | |||||
 | 1976 | Greater St. Louis Stamp Club is formed. President: Carl Uccello, Vice President: Robert Partney, Secretary: Dorothy Reinhold and Treasurer: Joe Singer. Constitution, Newsletter Vol. 1 | ||||
| 1995 | St. Louis hosts the 109th Annual American Philatelic Society Convention. | |||||
| 1997 | Greater St. Louis Stamp Club becomes Chapter #1011 of the American Philatelic Society. | |||||
 | 2007 | The Mound City Stamp Club (#344) and the Greater St. Louis Stamp Club (#1011) are merged to form the “Greater Mound City Stamp Club” and retains APS Chapter #344. | ||||
 | 2008 | Aug. 24, 2008 – Original Greater Mound City Stamp Club Constitution is ratified. | ||||
 | 2015 | Based on the winning design submitted by Frank Kollinger in a club wide contest, the Club announces the approval of a new club logo in August 2015. |