Zippo on Twitter: "Original 1933 Zippo lighters were ¼” taller than current models. See one at the #Zippo/@WRCase Museum #MuseumMonday https://t.co/UqhSz61Rzb" / Twitter
1933 Zippos — LighterGallery.com
1937-1942 Zippo Diagonal Slash Corner Working Lighter with 1947 - 1949 – NORTHERN ELECTRIC LIGHTING COMPANY