A 501(c)(3) organization is a United States corporation, trust, unincorporated association or other type of organization exempt from federal income tax...

A 501(c) organization is a nonprofit organization in the federal law of the United States according to Internal Revenue Code (26 U.S.C. § 501(c)). Such...

T56-A-101 for the Air Force's C-130 aircraft, T56-A-427 for NAVAIR's E-2C and C-2A aircraft, 501-D39 for the Lockheed L-100 aircraft, and the 501-K34...

501 is a year in the Common Era. 501 may also refer to: 501 BC, a year in the era B.C. 501 (number) Avro 501, a military seaplane 501 Squadron (disambiguation)...

The Johnson Amendment is a provision in the U.S. tax code, since 1954, that prohibits all 501(c)(3) non-profit organizations from endorsing or opposing...

Turning Point Action (TPA) is an American 501(c)(4) organization, which by law can campaign either for or against candidates running for office. It is...

raised troop compartment. WZ-501 – Converted into a battlefield surveillance vehicle. YW-501 – Export variant of WZ-501. NFV-1 (N stands for NORINCO,...

The Fiat 501 is a car produced by Fiat between 1919 and 1926. The 501 was Fiat's first model after World War I. Fiat introduced the S and SS sports versions...

A 501(h) election or Conable election is a procedure in United States tax law that allows a 501(c)(3) non-profit organization to participate in lobbying...

American Majority Action is a conservative 501(c)(4) non-profit political action organization which focuses on voter education and mobilization efforts...