Superman vs. The Amazing Spider-Man Treasury (Marvel/DC, 1976)

From the history-making first heroic crossover between Marvel and DC! This image was changed slightly for publication, with the background simplified, and Spider-Man's head changed to make him look straight at the reader rather than back at Superman. Marvel and DC split creative duties amongst their creators, with Marvel tapping Ross Andru for the pencil work, and DC putting forth Dick Giordano for the inks. Neal Adams was brought in to do redraws of Superman figures, but was not credited.