He worked on his father's farm for four years, and in 1873 Withycombe purchased his own 100-acre (0.40 km2) parcel on the Horace Lindsay Land Claim, later expanding his holdings to 256 acres (1.04 km2).[citation needed] Agriculture became Withycombe's passion, becoming a prosperous livestock breeder and establishing a reputation as a successful scientific farmer.Withycombe also became heavily involved in Oregon's agricultural industry, serving as president of the North Pacific Wool Growers and Northwest Sheep Breeders Associations.He won the Republican nomination in the primary but lost in the general election to incumbent Democratic governor George Earle Chamberlain.With the new commission in place, a large road-building program was initiated, establishing many of Oregon's modern state routes and highways.