Bill Monroe 6 Album Lot: Early Bluegrass Music by The Monroe Brothers, RCA 1963 (sleeve has come completely apart) Bill Monroe's Greatest Hits, MCA 1973 Bill Monroe Master of Bluegrass, MCA 1981 Bill Monroe & His Bluegrass Boys Bluegrass Instrumentals, DECCA Records (sleeve is coming apart in multiple places) Bill Monroe & His Bluegrass Boys Bluegrass Special!, MCA 1973 Bill Monroe's Uncle Pen, MCA 1972