Early life and education
Walker wanted to serve in Africa under the American Board of Commissioners for Foreign Missions, but unrest there led the board to direct him towards the Oregon Country. William W. Thayer introduced him to Mary Richardson, who also wanted to serve as a missionary. On April 22, 1837, Mary and Elkanah met, 48 hours later they became engaged. They married hurriedly on March 5, 1838 near her home, as they would depart on March 7 for their mission. They had eight children in the Oregon Country: Cyrus Hamlin Walker, Abigail Boutwell Walker (mother of Ruth Karr McKee), Marcus Whitman Walker, Joseph Elkanah Walker, Jeremiah Walker, John Richardson Walker, Levi Chamberlain Walker, and Samuel Thompson Walker.
The Walkers traveled to the Oregon Country with other missionaries. From August 1838 to June 1848, under the auspices of American Board of Commissioners for Foreign Missions, he and Cushing Eells and their wives created and lived at the Tshimakain Mission, studying the local language and bringing their Protestant faith to the Spokane People.
On November 29, 1847, Cayuse Indians massacred the members of the Whitman Mission in Walla Walla. Elkanah Walker and Cushing Eells were supposed to be at the Whitman Mission during the time of the massacre, but Elkanah Walker became sick, and Cushing Eells did not want to leave the families without support with during winter.
Later life and death
After arriving in Oregon City, Elkanah Walker purchased a wagon on credit and began freighting goods. He and his family moved to Forest Grove, Oregon in October 1849, where he purchased a donation land claim. He began farming and preaching. For many years he served Congregational churches in Forest Grove. Walker was a member of the first Board of Trustees of Whitman College in 1860. He gave land to the college on which the first building was erected.
- Drury, Clifford Merrill. First White Women Over the Rockies Diaries, Letters, and Biographical Sketches of the Six Women of the Oregon Mission who made the Overland Journey in 1836 and 1838, Mrs. Elkanah Walker and Mrs. Cushing Eells. Vol II. Glendale, CA: The Arthur H. Clark Company. 1963, pp. 42-44.
- Durham, Nelson W. The History of the City of Spokane and Spokane County, Washington: From its earliest existence to the Present Time. Volume 1. Spokane: The S. J. Clarke Publishing Company. 1912, p. XXX.
- Eells, Myron, 'The First Book Written in the State of Washington' p. 156, The Washington Historian, July, 1900, viewed September 19, 2014
- Durham (1912), p. 89.
- Durham (1912), pp. 346-348.
- Drury (1963), p. 349.
- Drury (1963), p. 355.
- "Guide to the Elkanah and Mary Walker Papers, 1828-1885". Oregon Historical Society Research Library, indexed at NWDA. Retrieved 24 September 2014.