American Philatelic Society (APS) – the oldest and largest national organization of stamp collectors in the United States, founded in 1886. Description The American Philatelic Society is the largest non-profit philatelic organization in the world, […]

The Democratic Socialists of America (DSA) is an American social and political organization founded in 1982 and united supporters of democratic socialism, labor activists and representatives of the left wing of social democrats. The largest […]

The Institute for Historical Review is an American public organization primarily dedicated to publishing literature on twentieth-century historical revision. Since its founding in 1978, it has been the leading American publisher of books and other […]

The New York Academy of Sciences is an American nonprofit scientific organization with a paid membership; as of 2012, it had more than 25,000 members from 140 countries. History Founded in 1817 as the Lyceum […]

The United Postal Stationery Society (UPSS) is a public, non-profit organization of collectors of whole things established in the United States. History The organization arose on July 1, 1945, from the merger of the Postal […]

The Feminist Majority Foundation (FMF) is a non-profit organization headquartered in Arlington County, Virginia, USA, whose stated mission is to oppose violence, empower women, support gender equality and economic development. The name “Feminist Majority” was […]

The American Civil Liberties Union is a non-profit, non-partisan organization dedicated to protecting the rights of citizens under the U.S. Constitution. Founded in 1920, the organization now has about 500,000 members and a budget of […]

The MomsRising Project is one of the largest social projects in the United States. The main participants of the project are American moms trying to change the country so that America would be more comfortable […]