1To George Washington from John Hills, 26 February 1796 (Washington Papers)
Having had the honor of being occasionally employed within the last five years by the late Secretary of War General Knox in surveying levelling and exploring from Connecticut River to Boston, and in behalf of the United States to examine the Potowmac River for a proper Scite whereon to erect a national arsenal—as well as in making divers plans &c. for the use of the War Department—and also by...
2To George Washington from John Hills, 21 August 1789 (Washington Papers)
Having made it my constant Study, for several Years, to be fully acquainted with the Geography of this Country, (which necessary knowledge I apprehend few, (if any) have obtained)—& being particularly attached to this Science, induced me to make a general Collection of the Plans, Sketches &ca of great part of this Continent during the War—I likewise have procured all that were in the...