A common custom among negroes is to wear a leather strap about the wrist as a cure for rheumatism, sprains, etc., and to give strength.
Chestertown, Md. (negro).

A common custom among negroes is to wear a leather strap about the wrist as a cure for rheumatism, sprains, etc., and to give strength.
Source: Current Superstitions (1896), entry 812.
Fanny D. Bergen, editor.
Modern normalized navigation; the historical attribution above remains unchanged.