an Entity references as follows:
Judge J. Jackson (March 12, 1883, Montgomery County, Alabama - April 7, 1958, Ozark, Alabama) was an American sacred harp composer, songwriter, and educator. His 1934 publication The Colored Sacred Harp was later recognized by scholars such as Doris Dyen and New Grove writer Joe Dan Boyd as an important document of early twentieth-century shape note singing practice.