On this page about United Aircraft and Transport Corporation:
The United Aircraft and Transport Corporation was formed In 1929, when William E. Boeing Sr. teamed up with Frederick Rentschler of Pratt & Whitney.
1927, which was absorbed in 1929 by the United Aircraft and Transport Corporation as a subsidiary... The Northrop Corporation was a leading aircraft manufacturer of the United States. The Northrop... corporation by Douglas in 1937, and the plant became the El Segundo Division of Douglas Aircraft. Northrop...
attempt by the United Aircraft and Transport Corporation in order to keep their control over Pan Am... problems, which forced it to sell off many of its aircraft (most of which were soon broken apart) and... Am brand operate a small number of flights within the continental United States, to Puerto Rico and...