This site commemorates the courage of Marcus and Narcissa Whitman, the role the Whitmans played in establishing the Oregon Trail, and the challenges encountered when two different cultures meet. In 1836, before the wagon trains, a small intrepid group of Presbyterian missionaries traveled with the annual fur trappers caravan into Oregon Country. Missionaries Narcissa Whitman and Eliza Spalding became the first white women to travel across the continent. Differences in culture led to growing tensions between the Cayuse people and the Whitmans. A measles outbreak in 1847 killed half the local Cayuse. Some of the Cayuse blamed these deaths on Dr. Whitman. Dr. and Mrs. Whitman were killed; sixty people were taken hostage. The deaths of the Whitmans sent a shock wave across the country and prompted Congress to make Oregon a U.S. territory. Leashed pets are permitted in the park, but are not allowed in the buildings. Leashes must be no longer than six feet. Pets may not be left unattended.