Among these were construction of a wagon road on the east side of the Willamette between Portland and Oregon City and a wagon track along an route, surveyed by Brown, between Portland and the farmlands of the Tualatin Plains to the west. To increase profits from cattle, Pettygrove built a slaughterhouse along the river and sold hides to Daniel H. Lownsdale, who had opened the first tannery on the Pacific Coast on a tract just west of the town site. Fiercely competitive, Pettygrove and Stark drove others, including Couch, who had his own store in Oregon City, out of business by monopolizing trade between Portland and Hawaii, charging high rates to import goods for others and raising the price of imported salt to gain control of the salmon trade. In 1847, after the United States and the United Kingdom had negotiated a boundary treaty dividing the Oregon Country between them, thousands of pioneers entered the Oregon Territory, the part of the Oregon Country ceded to the U.S., most of them settling in the Willamette Valley. Meanwhile, after an apparent disagreement with Pettygrove, Stark returned temporarily to New England, and Pettygrove took control of the entire town site. By 1848, Pettygrove "was one of the wealthiest residents of the territory". . During that year, the California Gold Rush attracted so many men from Oregon that it caused an Oregon labor shortage. Seeing little hope of further short-term growth in Portland, Pettygrove began selling his assets. While Stark was out of town, Pettygrove sold the entire townsite, including Stark's share, to Daniel H. Lownsdale for $5,000 worth of leather. This netted Pettygrove a one-hundredfold profit for his original $50 investment. Washington In 1851, Pettygrove and L.B. Hastings, another businessman, decided to establish a new town on the west side of the entrance to Puget Sound in the U.S. state of Washington. Scouting the area for a likely spot, they met Alfred A. Plummer and Charles Bachelder, who had filed land claims near a bay on the northeastern corner of the Olympic Peninsula. After the four agreed to found a city on this site, Pettygrove and Hastings returned to Oregon for their families and other settlers and returned to what became Port Townsend. Pettygrove died there in 1887 and is buried in Laurel Grove Cemetery. Other interests, legacy Pettygrove married Sophia Roland in 1842. By 1845 they had two children, the first of