1Henry Knox to Tobias Lear, 1 December 1792 (Washington Papers)
...waters of the Allegheny and Monongahela rivers had risen sufficiently, “I will embark the...
2To George Washington from Henry Knox, 17 August 1793 (Washington Papers)
...Western Experiment,” a sloop built on the Monongahela River, in Washington County, Pa., which...