John M. Mossman Lock Collection

John M. Mossman (1846-1912) was a bank vault engineer who operated out of New York City in the late 19th and early 20th centuries. His customers included the Stock Exchange and Bank of America, and he often found himself replacing older locks with new, upgraded versions. He kept hold of the locks that he replaced, which formed the basis for his 370-item lock collection. As a result, the collection…