Osmond Fraenkel

[2] In De Jonge v. Oregon he defended a client accused of criminal syndicalism after this person had spoken at a meeting of the communist party.

[2][4] He defended Consumers Union's pamphlet on contraception from Frank Comerford Walker's opinion that it was obscene.

[2] He did legal work for the cases around Japanese American internment, the Pentagon Papers, and school prayer in the United States.

[2] Fraenkel was a co-founder of the National Lawyers Guild and was present at pre-formation meeting in New York City on December 1, 1936.

[7] On December 11, 1913, Fraenkel married Helene Esberg; they had three children: Nancy (Mrs. James A. Wechsler), Carol (Mrs. Mack Lipkin), and George K.[3] In addition to the National Lawyers Guild, Fraenkel was also a member of Association of the Bar of the City of New York and the American Arbitration Association.