As is the pattern for all of the Legends In Their Own Time series, the material is drawn from contemporary magazines, ie, magazines published during the World War II era, and includes articles, ads, illustrations and some really marvelous artwork.
As an example of the artwork, we offer some wallpaper revised from a foldout in the December, 1944 number of Ziff-Davis' Industrial Aviation magazine.
Early in the war, the B-17 was the darling of the American (and, apparently, the British) press. Apart from the Doolittle raid a few some naval actions. the Flying Fortress represented our only attempt at fighting back. The planes and their crews were photogenic and located where they could be photographed and had been around long enough that the public had some familiarity with them. So for the first year or so of US involvement in the war, the B-17 probably bore the brunt of the US propaganda effort.
A fair number of articles on the B-17 appeared in my sources. They are presented, in approximately chronological order, on their own page.
Like many of the successful planes in the US WWII arsenal, the B-17 underwent an extensive range of modifications and changes. Mining down through the development page will lead to a good deal of information about the nature of those changes, with photographic examples.
The B-17 was well illustrated: line drawings and diagrams appeared in the Design Analysis articles and in the "Aviation's Sketchbook of Design Detail" section.