TY  - BOOK
AU  - Shaffer,Douglas Howerth
ED  - National Association of Watch and Clock Collectors.
TI  - A survey history of the American spring driven clock, 1840-1860
PY  - 1973///]
CY  - [Columbia, Pennsylvania]
PB  - [National Association of Watch & Clock Collectors]
KW  - Clocks and watches
KW  - United States
KW  - History
KW  - 1840-1860
KW  - catalog
KW  - NAWCC
KW  - National
KW  - Pittsburg
KW  - Clock (general)
KW  - Exhibition
N1  - Cover: "A 'Living Monograph' presented at the NAWCC Thirtieth Anniversary Convention, Pittsburgh, Pennsylvania, June, 1973"
ER  -