_Survey of Land_, drawn and documented by George Washington on April 2, 1751 for Thomas Loftan of Frederick County, Va. Paper, 12 in. wide by 7-3/4 in. high. This survey was made by Washington when he was 19 years of age, and it is believed to be the only such document relating to his earliest period as a surveyor. Washington was licensed as a surveyor by the President and Masters of William and Mary College in 1749. On July 20th of the same year he was appointed surveyor in Culpepper County, Va., by Governor Dinwiddie. Acquired in 1961. USNM 238367. FIGURE 84. WHITE, PEREGRINE (1747-1834), Woodstock, Conn. _Surveying Compass_, about 1790, made of brass, complete with original case, tripod, and gunter's chain. The instrument measures 12-1/4 in. overall. The dial, with a diameter of 5-5/8 in. and a pewter vernier ring, is inscribed "PEREGRINE WHITE/Woodstock." Tripod is 57-1/2 in. long and has walnut legs and a brass universal socket joint. Gift of Dr. and Mrs. Arthur M. Greenwood. USNM 388993. FIGURE 23. [Illustration: Figure 84.--Survey of land drawn and documented by George Washington for Thomas Loftan of Frederick County, Va., in 1751. Size: 12 in. wide, 7-3/4 in. high. USNM 238367.] WHITNEY, THOMAS (fl. 1798-1821), Philadelphia, Pa. _Pocket Compass_ of brass encased in brassbound mahogany box with separate carrying case. Paper dial is inscribed "T. Whitney/ Phil^a." Carried by Capt. William Clark on the Lewis and Clark Expedition to the Pacific Coast in 1803-1806. USNM 38366. FIGURE 85. [Illustration: Figure 85.--Pocket compass made and signed by Thomas Whitney of Philadelphia. With original carrying case. Carried by Capt. William Clark on the Lewis and Clark expedition to the Pacific Coast, 1803-1806. USNM 38366.] Appendix SURVIVING WOODEN SURVEYING COMPASSES (Asterisk denotes information unavailable) _Length _Height of _Maker _Collection_ _Type _Length _Width of bars needle and of (in.)_ (in.)_ (in.)_ (in.)_ period_ wood_ Preston R. Maple 9 5 3-1/4 * Unsigned (18th Bassett century) Bucks County Cherry 11 5-1/2 6-5/8 2-3/8 Thomas Greenough Historical of Boston Society (1710-1785) Bostonian Apple or 13-7/8 * * 4-3/4 John Dupee of Society walnut Boston (after 1761) Dartmouth Walnut 7-3/4 * * * Thomas S. Bowles College Museum of Portsmouth, N.H. (c. 1765-1821)