Source
BRMS 167. Matthias Joseph Gerzabeck (fl. 1775). Himlischer Weeg-Weiser oder Auserlösene krafftig und anmüthige Gebetter. 1775. Manuscript on paper with calligraphic flourishes, signed and dated 1 October 1775 by Matthias Joseph Gerzabeck, with engraved frontispiece and 12 engraved devotional plates by Franz Heissig.