Joel Wilkerson;75;of 1264 McKean Ave.;Donora;died Saturday;April 1;1989;at 10:30 a.m.;in Westmoreland Hospital;Greensburg. Born July 4;1913;in Atlanta;Ga.;he was the son of the late Henry and Della Allen Wilkerson. Survivors include one son;Henry Wilkerson of Donora;one brother;Shedrick Wilkerson of Boston;Mass.;one sister;Mrs.Gussie Lou Bailey of Monessen;and two sisters-in-law;Iola Palmer and Cleotha Lyon;both of Donora. Friends will be received Tuesday from 2 to 9 p.m.;in the Percy E.Law Jr.Funeral Home;1324 Meldon Ave.;Donora;where services will be held Wednesday at noon;with the Rev.Larry C.Woods officiating. Interment will be in Belle Vernon Cemetery.