Reference

William Henry Harrison served as a congressional delegate from the Northwest Territory in the years 1799 and 1800. He was elected as the territory's delegate to Congress in 1799, and during his tenure, he played a significant role in penning the Land Act of 1800, which reduced the size of land tracts that could be purchased from the government. This information is corroborated by various sources, including the Library of Congress, The White House, and Encyclopedia Virginia.