"The American Pioneer Missionaries. Dr. Horace N. Allen, William B. Scranton, Horace Grant Underwood, Rev. Henry Appenzeller and their families. ,", 1887

"The American Pioneer Missionaries. Dr. Horace N. Allen, William B. Scranton, Horace Grant Underwood, Rev. Henry Appenzeller and their families. ,", 1887, Box: KP 9.1.5. William Elliot Griffis Collection, MC 1015. New Brunswick Special Collections. https://archives.libraries.rutgers.edu/repositories/11/archival_objects/357369 Accessed January 10, 2025.