ADVERTISING FLIERS--MASSACHUSETTS-—-BOSTON.
 
SPECIAL POLLEN Jenkins’; Nathaniel, firm, Boston.
SCbH Jenkins' patent compression valves and guage «F869 cocks. CBoston, 1869]
54 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.
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