Newspapers are an excellent place to find primary source articles about sports!
Check out the list below.
Published: 1964
Usage: Public Domain
Universal Newsreels via The Internet Archive
https://archive.org/details/1964-10-15_US_Dominates_Tokyo_Games
The winners of the 1960 Olympic medals for light heavyweight boxing on the winners' podium at Rome: Cassius Clay (now Muhammad Ali) (C), gold; Zbigniew Pietrzykowski of Poland (R), silver; and Giulio Saraudi (Italy) and Anthony Madiga (Australia), joint bronze.
In 1967, the American athlete Kathrine Switzer, became the first woman to run the Boston Marathon.
At the time, athletics officials believed women were incapable of running more than a mile and a half.