Lewisburg rhymes with:
guggisberg, harrisburg, harrisburgh, johannesburg, belzberg, blacksburg, brisburg, clarksburg, darensbourg, dasburg, duisburg, flansburg, forsberg, forsburg, fosberg, fredericksburg, ginsberg, glassberg, grossberg, guggisberg, habsburg, hapsburg, harrisburg, harrisburgh, hertzberg, iceberg, johannesburg, kreisberg, kreitzberg, lawrenceburg, mechanicsburg, mossberg, mossburg, nitzberg, osberg, pietermaritzburg, pittsburg, pittsburgh, plattsburgh, prisburg, ramsburg, remsberg, remsburg, riesberg, risberg, rosberg, saltzburg, schatzberg, schlosberg, schlossberg, schwartzberg, schweinsberg, strasberg, strasburg, strassburg, vicksburg, vosberg, vosburg, vosburgh, weisberg, weissberg, wolfsburg
Lewisburg sounds like:
l'express, lakeberg, lashbrook, leesburg, lekberg, lesabres, lugubrious