AMA Plans Service has been bestowed the entire inventory of Bill Northrop's Plans Service, according to a story in the February 2015 edition of Model Aviation. Stretching back to Model Builder magazine's publication era (1971 through 1991), AMA Hall of Famer Bill Northrop amassed a collection of more than 800 plans, including free flight, radio control, and control line airplanes as well as a few boats. Bill's wife and business partner, Anita, was instrumental in making arrangements for the transfer, so thanks to her.
Many sources of 'free' versions of plans are available on the Internet while legitimate copies can still be purchased from the copyright owners. The plans I post here on Airplanes and Rockets were scanned from copies of magazines I own and are meant to be just detailed enough to determine whether you want to purchase a set of plans for your building project. I always provide a hyperlink to the AMA Plans Service website in an effort to promote the organization of which I have been a member since the early 1970s (AMA #92498). If nobody sells a legitimate copy of a plan, then I will offer so send my higher resolution scan version. I never charge for other people's work. Per the biography of Bill Northrop on the AMA website, "A year or so after we discontinued MB[*], we rescued all of the original MB plans from bankruptcy court (it wasn't cheap!) and started a new plans book, entitled 'Scratch Builder's Almanac.'" People deserve to be compensated for their time and materials.
* MB = Model Builder magazine.
Posted January 29, 2015