Search for: Title Author Subject Series that begins with: 10 20 30 50 100 per page < Previous 10 Headings Next 10 Headings > Browse Headings # United Air Lines, Inc. 6 United Air Lines, inc. -- Handbooks, manuals, etc. 1 United Air Lines, inc. -- History. 2 United Air Lines, inc. -- History -- 20th century. 1 United Aircraft Corporation -- United Technologies Corporation 1 United Aircraft Corporation. Pratt & Whitney Aircraft Division 2 SEE ALSO later heading: Pratt & Whitney Aircraft Group 3 United Aircraft Corporation. Pratt and Whitney Aircraft Division -- SEE: United Aircraft Corporation. Pratt & Whitney Aircraft Division 2 United Airlines. 3 Continental Airlines 7 United Air Lines, Inc. 6 United Airlines Flight 93 Hijacking Incident, 2001 3 United American Free Will Baptists -- North Carolina -- History. 1 10 20 30 50 100 per page < Previous 10 Headings Next 10 Headings >