PUMPING MACHINERY--CATALOGS.
SPECIAL
— COLLECTIONS 5 swell, H. M., firm, Boston. SCbH Aerifying chain of cups. Wonderful and highly . F869 important results are produced by this new and «55 ingenious arrangement, devised and patented by
A. H. Knapp ... Boston, Wright & Potter [1869]. broadside. 24.5x20cm. From a collection of fliers distributed at the Massachusetts Charitable Mechanic Association's Eleventh Exhibition, 1869.
1. Pumping machinery--Catalogs. 2. Advertising fliers--Massachu , setts--Boston. 3. Broad- sides--U.S. @ 4, Water--Aeration.
H
I. Knapp, A MB