American football has been around for a hundred years, burst in popularity in 1958 so I would say football careers were a viable option in the 1960's.
1960s and 1970s, 1960s and 1970s,
The 1960s-1970s
The alternative medications for aspirin in the 1960s and 1970s were paracetamol (acetaminophen) and ibuprofen.
Calvin Hill wore the number 35 during his career in the NFL, primarily with the Dallas Cowboys. He was known for his impressive running style and contributions to the team during the late 1960s and early 1970s. Hill also had significant success in college football at Yale before his professional career.
An estimate about 1960s to 1970s
The 1960s and 1970s.
The 1960s and 1970s
Gale Sayers was a professional American football player, primarily known for his time as a running back with the Chicago Bears in the NFL during the 1960s and early 1970s. After his football career, he became a successful businessman and worked as a motivational speaker. Sayers was also involved in sports administration and was recognized for his contributions to the game and his community.
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The Purple People Eaters was the nickname of the Minnesota Vikings football team's defensive line of the late 1960s to the late 1970s