found: Its Will the circle be unbroken [SR] 197-?: labels (The Staple Singers) container (founded by Roebuck and Oceola Staples and their children, 1948, Chicago)
found: Southern, E. Biog. dict. of Afro-Amer. and African musicians (Staple Singers, The; gospel group, fl. 1950s-70s)
found: All-music guide, Aug. 16, 2001 (The Staple Singers; Roebuck "Pop" Staples, Cleotha Staple, Mavis Staples, Pervis Staples, Yvonne Staples)
found: AMG, Mar. 10, 2004 (The Staple Singers; see also The Staples; Urban Knights III, 2000: all-female vocal group the Staples (cousins of the famed Staple Singers))