National Geographic : 1979 May
-- --- 31/2" 4" - If you took a roll of 35mm film to Fotomat for developing, you'd get back a 31i x 5 print. And you'd really like it. ©FotomatCorp. All rights reserved. If you took that roll to Fotomat for our new Series 35 developing, you'd getbackabig4x6print. And you'd really, really like it.