Using Haberstroh, H. F. Bernhart is listed twice (no time frame noted):

1. German People's Church, German National Church, Deutsche Protestantische Volskirche, Reformed, possibly begun as Presbyterian or independent, founded 1891 at Throop Ave. n. Myrtle Ave. Records currently at St. Mark UCC, 601 Onderdonck Ave, Ridgewood NY 11385

2. German People's Church, German National Church, Deutsche Protestantische Volskirche, St. Mark Evangelical Reformed (same info as above; records at same location). For this listing, he is named as H. F. Berkhart or Bernhart