Aeronautics. Denver Mrs. Dorothy Young, tiny Denver woman,scores aviation first helicopter instructor. Post Mar. 8, 1956 p.11 George A. Frederick, jet pilot who gave life, gets top flying medal. Post Oct. 29, 1956 p.13 Denver union airline pilote split $4000 dues dividend. RMN March 30, 1958 p.61 Will be center for jet airliner weather forecasts. RMN, Dec. 30, 1958, p.2^ Harry Benjamin Combs II, offering first civilian jet plane to Denver area customers. er 10 Journal Ag 18, 1955 p.1 Cervi's