51Thomas Jefferson to James Clarke, 1 August 1817 (Jefferson Papers)
the basis however of what has occurred to me is a four wheeled carriage, very light, the wheels to be like cotton spinning wheels & all other parts proportionably light. just over the bolt which connects the perch with the fore axle, suppose a machine fixed, so as to remain steadily in the direction of the perch, and the fore-axle made...
52Thomas Jefferson’s Specifications for the Rotunda Planetarium, 1824?, 31 December 1824 (Jefferson Papers)
...then be provided, it’s upper end moving on a pivot in the zenith, it’s lower end resting on the circle of amplitude. this must be made on thin flexible white oak like the ream of a cotton spinning wheel; and fixed in it’s curvature, in a true quadrant by a similar lath of white oak as it’s chord a. n. their ends made fast together by clamps. this flexible meridian may be of 6....
53To Thomas Jefferson from John Cunow, 17 December 1808 (Jefferson Papers)
To this may be added, that two Brethren lately have been sent to reside among the Creeks, who under the direction of Col. Hawkins furnish them with spinning wheels, looms, tin ware and other articles of their trade.