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<DIV><BR>1. Crank, J. The Differential Analyser. London: Longmans &
Green, 1947. First edition. Cloth lightly soiled, corners bumped. Owner's
name. Occasional pencil notes. Else tight and clean. Technical
and mathematical description of a "new type of calculating machine" - an early
computer. By one who was in charge of it at the Mathematical Laboratory in
Cambridge. 137 pp. Photos and diagrams. Hardbound. Good/no DJ.
(17298) $250.00<BR></DIV>
<DIV>
<P><FONT size=2>Gil Mott</FONT></P>
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<P><FONT size=2>Gil Mott<BR>135 Keeler Drive<BR>Ridgefield, CT
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