Gettysburg rhymes with:
ainsberg, augsburg, cannonsburg, carlsberg, duesberg, ellsberg, ellsburg, gaithersburg, galesburg, ginsburg, ginzberg, greensburg, herzberg, holidaysburg, jewelsburg, kanegsberg, kaysersberg, koenigsberg, kongsberg, kosberg, kozberg, landsberg, leesburg, parkersburg, petersburg, ransburg, regensburg, romesburg, salzberg, salzburg, st_petersburg, twinsburg, wensberg, williamsburg, williamsburgh