found: Her The changelings, c1985:CIP t.p. (Jo Sinclair) data sheet (Sinclair, Jo, pseud. of Ruth Seid; b. 1913)
found: LC manual auth. cd.(hdg.: Seid, Ruth; usage: Jo Sinclair)
found: NUCMC data from Boston Univ., Dept. of Spec. Coll. for Jo Sinclair collection, 1931-1999(Jo Sinclair; pseud. of Ruth Seid; b. 1913; d. 1995)
found: Wikipedia, December 5, 2020:(Ruth Seid (July 1, 1913--April 4, 1995), was an American novelist who wrote under the pen name Jo Sinclair. She earned awards and critical praise for her novels about race relations and the struggles of immigrant families in America)
