POPULAR AVIATION was started in August 1927 by airplane fan William B. Ziff (of Ziff-Davis Magazines). Under Editor Harley W. Mitchell it became the largest aviation magazine, with a circulation of 100,000 in 1929. The magazine's title became AERONAUTICS in June 1929, but was changed back to POPULAR AVIATION in July 1930. The magazine became FLYING in 1942, and is still published today by Hachette Filipacchi Media. [Source: Michael Holley in Wikipedia]