If you are interested in “secret projects” and aviation might-have-beens, check out RetroMechanix.com. Our most recent articles include a summary of the proposal for the North American All Weather Super Fury (an evolution of an earlier navalized F-100 proposal) from 1954:
It features 78 high resolution images, most previously unpublished. We also have an article on the Bell Supersonic Research Test Aircraft proposal of 1954:
…and an article on the McDonnell Douglas Quiet Attack Aircraft proposal of 1974, an early attempt at stealth:
All articles feature previously unpublished, high resolution images; this is ideal information for the scratchbuilder, kitbasher, or general enthusiast. There are many more articles to come in the weeks ahead, so please visit frequently!
-Jared