Daughter of Frank George and Ada Geneva (Petersen) Jensen; married George C. Littke (a college professor), June 29, 1954; children: Lori S. Education: Utah State University, B.S., 1952; graduate study at City College (now City University of New York), 1955-59, and University of California—Los Angeles, 1968. Politics: Democrat. Religion: Church of Jesus Christ of Latter-day Saints (Mormon). Hobbies and other interests: Travel. Memberships: Society of Children's Book Writers and Illustrators, Council on Children's Literature.Agent: Jack Byrne, 3209 South Fifty-fifth St., Milwaukee, WI 53219-4433.
Gates Rubber Co., Denver, CO, secretary, 1952-54; Life Insurance Association of America, New York, NY, secretary, 1954-60; worked as a medical secretary for a physician in New York, NY, 1960-63; writer, 1963—. Taught writing classes in writers' programs at Pasadena City College and University of California—Los Angeles, 1978-88.
Southern California Council on Children's Literature Award for notable work of fiction, 1992, for Blue Skye; Best Books for the Teen Age, New York Public Library, 2003, for Lake of Secrets.