1. “John Nelson Marble.” American Art News 16, no. 26 (1918): 4, http://www.jstor.org/stable/25589270.
  2. Alexander W. Katlan, Salmagundi Club painting exhibitions records 1889 to 1939: a guide to the annual exhibition of oil paintings and the annual exhibition and auction sale of pictures (Flushing, NY: Alexander W. Katlan & Salmagundi Club NYC, 2008).
  3. “In the court of probate…,” Christian Science Sentinel, October 25, 1913, https://sentinel.christianscience.com/shared/view/2c2i5xxsce6?s=e.
  4. Archibald McLellan, “‘Be Strong and of a Good Cheer,’” Christian Science Sentinel, October 25, 1913, https://sentinel.christianscience.com/shared/view/284psh9hbtu?s=e.
  5. Russell Bastedo, “The New Hampshire State House Portraits Collection.” February 2000, accessed February 10, 2017, http://www.tfaoi.com/aa/1aa/1aa372.htm.