ee ee a
SPECIAL COLLECTIONS yonkins, Nathaniel, firm, Boston. SCbH Jenkins' patent compression valves and guage . F869 cocks. (CBoston, 1869] iba Chip. illus. 2lem.
From a collection of fliers distributed at the Massachusetts Charitable Mechanic Association's Eleventh Exhibition, 1869.
1. Valves--Catalogs. 2. Advertising fliers-- Massachusetts—-Boston.