Harlem's rhymes with:
allums, alums, collums, columns, cullum's, curriculums, dellums, emblems, hallums, hellams, hellums, hoodlums, jaglom's, jerusalem's, kellams, ludlam's, ludlum's, moslems, muslims, neloms, problem's, problems, salem's, willaims, willems, woolums
Harlem's sounds like:
harlin's, harling, heirlooms, herling, herlong, hourlong, hurling