Foster was a successful businessman from Argyle, Maine. In the early 19th century he, like many others, headed west, recognizing the prospects of business in the Oregon Country. In 1842, the Fosters and Francis William Pettygrove's family sailed from New York for Oregon on the ship Victoria, an A.G. & A.W. Benson vessel via the Sandwich Islands. They were delayed on the Sandwich Islands for six months before heading on to the Willamette Valley, arriving in Oregon City in 1843.
Oregon
In Oregon City on the Willamette River Pettygrove and Philip Foster established a general store. The two-story building served both as a store and a home for the Foster family. Foster subsequently formed many partnerships, including establishing a flour mill with Dr. John McLoughlin. In 1844, Foster became the second treasurer of the provisional government in the Oregon Country. In 1845, Sam Barlow was unwilling to pay the Hudson's Bay Companybateaux to float down the dangerous Columbia River, so he, his family, and the rest of their wagon train searched for another route around Mount Hood. Joined by subsequent wagon trains, Barlow, Joel Palmer and emigrant Lock scouted for routes around the mountain. Palmer spotted possible passage from the heights of Mount Hood. Barlow with fellow traveler William H. Rector set out to blaze a trail, but they became lost on the mountain. After being rescued by local Indians and cattle drovers, Barlow met Foster at his Oregon City store where Barlow bought provisions and hired oxen to rescue his snowbound party. Foster became Barlow's business partner in building the Mount Hood Toll Road in 1846, which became the last leg of the overland Oregon Trail to Oregon City. Philip Foster moved his family from Oregon City and settled along the toll road, where he had a store, cabins for rent, orchards, gardens, and pastures for grazing stock. The Fosters received thousands of wagons and guests. At the sometimes overcrowded rest stop known as "Foster's Place" or "Foster's Ranch," some travelers paid to sleep on the family's parlor floor. The family also provided home-cooked meals for the emigrants. Charging whatever they could, the Fosters thrived. Philip Foster Farm has been preserved and is now open to visitors. It is listed on the National Register of Historic Places. Philip Foster died Monday, March 17, 1884, of a heart attack at his home in Eagle Creek in the doorway of the kitchen, the . Mary-Charlotte died in 1880 of typhoid fever.
