|Fifteen B-17Fs lined up (don't miss the one behind the hangar)|
In the photo are no less than fifteen Block 27 Boeing B-17F Flying Fortresses, either just before or just after delivery in 1942 (because of the lack of an Army Air Corps stamp on the back, I'm guessing that this is a Boeing Company photo). Note the tight grouping of serial numbers, and the lack of guns installed in the waist positions. And then there's the guy on the bicycle...like couldn't the photographer have waited just a few more seconds for the dude to get out of the frame?
From what I could find, the Block 27 F-models were built in Seattle, but this photo was clearly not taken there (here, for instance, is a view of B-17s on the Seattle ramp). I'm thinking maybe Wichita? If anyone has better location information, please comment below.