SPECIAL
COLLECTIONS Wi swall, H. M., firm, Boston.
SCbH . F869 +99
 
Aerifying chain of cups. Wonderful and highly important results are produced by this new and 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.
I. Knapp, A H. MB