The Sexual Freedom League (SFL) was an organization founded in 1963 in New York City by Jefferson Poland and Leo Koch.
Assistant professor of Biology Dr. Leo Koch had been fired by the University of Illinois in 1960 when he advocated premarital sex to students in a letter to The Daily Illini.
[2] In 1964, he and Jefferson Poland (then a student that was quoted as aspiring to be “either a lawyer or an agitator") founded the New York City League for Sexual Freedom.
In early 1966 Poland transferred the East Bay League to Richard Thorne, who proceeded to organize nude parties, which were thinly disguised sex orgies.
[5][6] The student chapter at UC Berkeley was named the "Campus Sexual Rights Forum", which would distribute information about sex ranging from abortion to contraception to go along with nude sit-ins and orgies.