Wikipedia on helmet stickers:
https://en.wikipedia.org/wiki/Helmet_sticker
History
ESPN says the practice of awarding helmet stickers is often wrongly credited to Ernie Biggs, also a trainer at
Ohio State under legendary coach
Woody Hayes.
[1] They instead claim that the practice of awarding stickers began with
Jim Young, former assistant coach at
Miami in 1965, two years before they were used by the Buckeyes.
[1]
An even earlier[
when?] attribution is given to Gene Stauber, freshman coach at
Nebraska (1955–1957) by head coach
Pete Elliott.
[2] Stauber routinely used stickers throughout his tenure as assistant coach at
Illinois (1960–1970), as a 1962 photo of
All-American linebacker
Dick Butkus indicates.
[3] The stickers stem from fighter pilots marking their planes with stickers after kills and/or successful missions.
[4]
Michael Pellowski, in his book “Rutgers Football: A Gridiron Tradition in Scarlet," credits
Rutgers defensive backs coach
Dewey King with being “one of the first” to award decals for helmets in 1961. The stickers were given for interceptions only so they were more difficult to earn. Every time there was an interception, the crowd yelled “give him the star.” The stars can be seen in this photo of the 1961 team walking from the locker room to the field prior to the season finale against Columbia.
[5]