Prior to the 1840s when Euro-Americans settled the area, the Atfalati band of the Kalapuya Native American tribe lived on the Tualatin Plains in what is now Forest Grove. In 1841, Alvin T. and Abigail Smith were among the earliest to use the Oregon Trail and settled on what was first known as West Tualatin Plain. They overwintered with Henry Harmon Spalding, arriving in what is now Forest Grove in the fall. Intending to be missionaries, they found little potential as most of the natives had succumbed to European diseases. Smith served as the community's first postmaster beginning on February 1, 1850, and his log cabin served as the post office.