Letter re: Airports Advisory Committee
Betsworth, Walter E.
1950-06-16
TCU
Letter re: American Association of Airport Executives
1952-03-28
1955-01-06
Letter re: Associates of Airport Executives meeting
1951-11-06
1952-12-28
1950-10-26
1951-04-17
1951-05-03
Statement re: American Association of Airport Executives
1954-08-15
Letter re: Waterloo Municipal Airport
1951-05-24