Hmmm. I have several resource books, including the Walk Around and Detail and Scale.
Here is what is in my library and hopefully this will help you find them. Look at Great Models Webstore and of course Squadron. I also hit my club's local show and the used book vendors who are there every year.
The first three of the books below are my 'go to' pubs whenever I build a B-17
Walk Around B-17 - by Drendel Squadron/Signal Publishing number 16
Boeing B-17 Flying Fortress -Warbird Tech Series Volume 7, Frederick Johnsen
B-17 Flying Fortress - in Detail and Scale volu 2. Alwyn Lloyd and Terry Moore
Boeing B-17 Flying Fortress - Ospery Aviation Production Line to Frontline Michael O'Leary
B-17 Flying Fortress - Warbird History William Hess
and I have 3 other picture books of the planes but less useful for modeling.
Hope this helps!
Chris
On the bench: Academy 1/72 B-17G 'Blue Hen Chick'; 1/48 Tamiya Mustang III; Kitty Hawk 1/32 P-39.
Completed: 1/48 Tamiya P-51D Mustang - 'Show Bird', 1/32 Dragon P-51D Flying Tigers 'What if'; 1/32 Tamiya P-51D Big Beautiful Doll
Group build:1/48 Tamiya Mustang III; 1/48 Tamiya P-51D Show Bird