"Basic Facts about the Oregon Trail". National Historic Oregon Trail Interpretive Center. United States Department of the Interior Bureau of Land Management. Archived from the original on March 4, 2016. Retrieved February 11, 2016.
"Kids on the Trail". National Historic Oregon Trail Interpretive Center. United States Department of the Interior Bureau of Land Management. Archived from the original on February 5, 2016. Retrieved February 11, 2016.
"Basic Facts about the Oregon Trail". National Historic Oregon Trail Interpretive Center. United States Department of the Interior Bureau of Land Management. Archived from the original on March 4, 2016. Retrieved February 11, 2016.
"Kids on the Trail". National Historic Oregon Trail Interpretive Center. United States Department of the Interior Bureau of Land Management. Archived from the original on February 5, 2016. Retrieved February 11, 2016.