Analysis of information sources in references of the Wikipedia article "Kathrine Switzer" in English language version.
[Switzer's] run created such a stir that the AAU [...] barred women from all competition with men in these events on pain of losing all rights to compete.
We checked the rule book and entry form; there was nothing about gender in the marathon. I filled in my AAU number, plunked down $3 cash as entry fee, signed as I always sign my name, 'K.V. Switzer,' and went to the university infirmary to get a fitness certificate.
In among the serious runners, fast and not so fast, are the characters: [...]; and, of course, women, who trot along as unofficial entrants, denied numbers for their chests. All of these poseurs, few of whom come close to finishing the race, send a shudder up the spine of John Duncan Semple, the irascible, 64-year-old Scot who is Mr. Boston Marathon himself.
We checked the rule book and entry form; there was nothing about gender in the marathon. I filled in my AAU number, plunked down $3 cash as entry fee, signed as I always sign my name, 'K.V. Switzer,' and went to the university infirmary to get a fitness certificate.