I hope it’s not too off-topic, but unfortunately the Literature Stack Exchange site is closed.
When I was a kid, I remember reading in L’album des Jeunes, which was a book containing selections of the Reader’s Digest and translated to French, a story by a British or American intelligence analyst during WWII, who was studying aerial photographs taken by the RAF above France, to look for V1 launching ramps, and how he found some disguised as garages under construction.
As far as I remember, the book was from the late 70s or early 80s. I remember really liking the story and I would like to read the full text, but I cannot find it with so little information that I remember. Does it ring a bell with anyone?