In the late 1950s, the United States government contemplated training women as astronauts, and newly released medical test results show that they were just as cool and tough as the men who went to the moon.
“They were all extraordinary women and outstanding pilots and great candidates for what was proposed,” said Donald Kilgore, a doctor who evaluated both male and female space flight candidates at the Lovelace Clinic, a mid-century center of aeromedical research. “They came out better than the men in many categories.”
The times being what they were, the program was scrapped, and US women did not make it into space until 1983. Link