Miami Dolphins
1966 Topps card. Dolphin "across hoop/sun" version.
August 8, 1966 issue of SI. Their original  helmet - "dolphin in the hoop version"
1968 Topps card. Dolphin "across hoop/sun" version.
1968 Game Program. Dolphin "across hoop/sun" version.
From 1971 - "head inside version"
From a 1973 SI (pic from '72)
Authentic Helmet Hut reproduction of Larry Csonka's 1972 helmet
From a January 1974 Sport Magazine
From a November1983 issue of SI
Current Dolphins Helmet