1871, Advert for Howsons' U.S. and Foreign Patent Offices, Advert, Google Books, LL/34888
1871 Advert for Howsons' U.S. and Foreign Patent Offices
Advert Google Books Published in "Handbook of the Practice and Art of Photography" by Dr. Hermann Vogel, translated by Edward Moelling (Philadelphia: Benerman & Wilson, 1871).
