A survey history of the American spring driven clock, 1840-1860 /
Shaffer, Douglas Howerth,
A survey history of the American spring driven clock, 1840-1860 / D.H. Shaffer. - 34 pages ; 24 cm
Cover: "A 'Living Monograph' presented at the NAWCC Thirtieth Anniversary Convention, Pittsburgh, Pennsylvania, June, 1973".
Clocks and watches--History--United States--1840-1860.
catalog NAWCC National Pittsburg Clock (general) History Exhibition
A survey history of the American spring driven clock, 1840-1860 / D.H. Shaffer. - 34 pages ; 24 cm
Cover: "A 'Living Monograph' presented at the NAWCC Thirtieth Anniversary Convention, Pittsburgh, Pennsylvania, June, 1973".
Clocks and watches--History--United States--1840-1860.
catalog NAWCC National Pittsburg Clock (general) History Exhibition