Roy E. Disney - Feature Animation Building, Riverside Drive, Burbank, Los Angeles County, California, 91521, United States
Walt Disney Animation Studios
Wikipedia's[2][3] article for the film and its list of Walt Disney Animation Studios films give the US release as 14 September 1951. It premiered in London on 26 July 1951 and in New York City on 28 July 1951, and went into general US release on 14 September 1951, the date used here. The Numbers[4] lists domestic release(s): July 28th, 1951 (Wide) by RKO Radio Pictures.
Alice in Wonderland is a 1951 American animated musical fantasy comedy film produced by Walt Disney Productions and released by RKO Radio Pictures. It reached US theaters on 14 September 1951.
Cavendish Laboratory