Earlier today, Sheila at Gawker posted a Pic of the Day, which happened to be a shot of Manhattan circa 1942. The photo is from the Charles Cushman Collection at Indiana University. There are plenty more shots of Manhattan from the same era, such as the one below of the Northeast Corner of 1st Street and the Bowery taken on Oct. 4, 1942.
Or this one, taken on the same day, described only as "a block between Avenue A and Avenue B." Any guesses?