 Soon other buggy manufacturers set up their own shops in Mifflinburg, and by 1855, with a population of 800, Mifflinburg hosted thirteen coachmakers.By the 1880s, with more than fifty buggy and sleigh factories, Mifflinburg became known as “Buggy Town” because its buggy makers produced more horse-drawn vehicles per capita than any other town in the state.The Mifflinburg Historic District, Hassenplug Bridge, and William A. Heiss House and Buggy Shop are listed on the National Register of Historic Places.