all Native American titles. When the land didn't sell as well as they had hoped, Phelps and Gorham were unable to come up with the funds to extinguish the Native American titles. They defaulted on their second payment in 1790. They lost the right to buy the pre-emptive rights to remaining lands of the Phelps and Gorham Purchase west of the Genesee River. This land, about 3,750,000 acres (15,000 km2), reverted to Massachusetts. The state immediately re-sold the pre-emptive rights to Robert Morris in 1791 for $333,333.33 (about $ today). In 1792 and 1793, Morris sold most of the lands west of the Genesee to the Holland Land Company, but he did not extinguish Native American title to the land until the Treaty of Big Tree in September, 1797. Morris reserved for himself a 500,000 acre (2,000 km2) strip approximately wide and extending from Lake Ontario to the Pennsylvania border along the eastern edge of the Holland Purchase, known as the Morris Reserve. At the north end of the Reserve, Morris sold an 87,000 acre (350 km2) triangular shaped tract ("The Triangle Tract") to Herman Leroy, William Bayard and John McEvers, and he also sold a 100,000 tract due west of the Triangle Tract to the state of Connecticut. Additional Phelps and Gorham lands east of the Genesee River which had not previously been sold, were acquired by Robert Morris in 1791, who re-sold them to The Pulteney Association, a syndicate of British investors. Mill Yard Tract Before defaulting on the rest of the land purchase agreement, Phelps and Gorham gave a 100-acre (0.4 km2) lot within the Mill Yard Tract at the Upper Falls of the Genesee to Ebenezer "Indian" Allen, on condition he build a grist mill and sawmill there by summer 1789 (the "100 Acre Tract"). In exchange for the Tract, Allen built the agreed-upon mills at the west end of the Upper Falls of the Genesee. But the location was so deep in the wilderness that there were only 14 men in the area to assist in the mill's construction. The area was a dense forest and swamp, and infested with rattlesnakes and mosquitoes that spread 'Swamp Fever' or what we now call malaria. In March 1792, with no settlers and no demand for mills, Indian Allen sold the Tract to Benjamin Barton, Sr. of New Jersey for $1,250. Barton almost immediately resold the property to