Simpson & Johnston. 1804-1804. Hagerstown, Md.. clockmaker or watchmaker --

Access_id	72790 (1)
Rediscov_id	35666 (1)
Name	Simpson & Johnston (1)
Active date	1804-1804 (601)
Location	Hagerstown, Md. (226)
Trade	clockmaker or watchmaker -- (1152)