Member states of the United Nations the United Nations Security Council (the Republic of China, France, the Soviet Union, the United Kingdom, and the United States) and a majority of the other signatories. A total of 51 original members (or founding members) joined that year; 50 of them signed the Charter at the United Nations Conference on International Organization in San Francisco on 26 June 1945, while Poland, which was not represented at the conference, signed it on 15 October 1945. The original members of the United Nations were: France, the Republic of China, the Soviet Union, the United Kingdom, the United States, Argentina, Australia, Belgium,
San Francisco International Airport Airlines and functions as United's primary transpacific gateway. It also serves as a secondary hub for Alaska Airlines. It is a major maintenance hub for United Airlines, and houses the Louis A. Turpen Aviation Museum and Library. SFO is owned and policed by the City and County of San Francisco, but is in San Mateo County. Between 1999 and 2004 the San Francisco Airport Commission operated city-owned SFO Enterprises, Inc., to oversee its business purchases and operations of ventures. The City and County of San Francisco first leased at the present airport site on March 15, 1927, for what was