found: Her Never alone, c1954.
found: Internet Broadway Database, Nov. 1, 2005(Joan Roberts; b. July 15, 1918, New York, NY)
found: Bio. and geneal. master index on GaleNet, Nov. 1, 2005(Roberts, Joan, 1918- ; Roberts, Joan, 1922- )
found: Perf. arts biog. master index(Roberts, Joan, 1918- ; Roberts, Joan, 1922- )
found: Contemp. theatre, film, and television:v. 64, index (Roberts, Joan, 1918- )
found: Playbill WWW site, Aug. 15, 2012(Joan Roberts; b. July 15, 1917, New York City; d. Aug. 13, Stamford, CT, aged 95; soprano who originated one of the major leading-lady roles in American musical theatre, Laurey in Rodgers & Hammerstein's Oklahoma!)
found: New York times WWW site, Aug. 16, 2012(in obituary published Aug. 15: b. Josephine Rose Seagrist, July 15, 1917, New York City; d. Monday [Aug. 13, 2012], Stamford, Conn., aged 95)