Thomas Jefferson: Estimate for Milldam, ca. 5 July 1822, 5 July 1822
| Estimate for milldam | ||
| stretchers. 10. of 40 f. each reach across the river | ||
| 8. tier of them (4. on each side) | 80. trees | |
| tiers 50. to each course x 4 courses | 200. tyers | |
| each of the 80 stretchers will give 1. | 80 | |
| 120. more [. . .] f long, 5. to a tree | 120. | 24. trees |
| 200. | 104. trees | |
| the | stone pens | 10. f. wide, 4 f. deep | |
| inter dam | 2. f | ||
| 12. f. or 4 yds wide. | |||
| each yard running measure = | 5⅓ yards | ||
| 133. yards | |||
| 666 | |||
| 44 | |||
| 710 cubic yds stone | |||
CSmH: Jefferson File.