Ever heard that your relatives were UNIA members?
Here's a chapter listing:

Appendix
UNIA Local Divisions Reporting to Parent Body

Florida:Miami (Division #201)Tampa (Division #272)
Illinois:Chicago (I.M., #217, #324)East St. Louis (#226)
Indiana:Gary (#132)
Louisiana:Baton Rouge (#298)New Orleans (#320)
Michigan-Detroit (#407)
Mississippi:Natchez (#135)
Missouri:St. Louis (#125)South Kinloch Park ( #198)
New Jersey:Burlington (#134)Camden (Garvey Club)Newark (#291)
New York:Brooklyn (#336)East Brooklyn (#252)New/York City (#340)Advance Club (#807)Garvey Club (#137)
North Carolina: Bailey (#406)Kingston (#361)Wilson20Western Reserve Historical Society
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Ohio:CampbellCincinnati (#146, #139)Dayton (#371)Youngstown (#102)Pennsylvania: Braddock (#177)Philadelphia (#121, #337, #812)Pittsburgh (#908)
South Carolina: Charleston (#112)T
ennessee:Knoxville
Virginia:Berkley (#339)Newport News (#108)NorfolkRichmond (#193)

BCB