Gary Cummins (March 22, 1974). "Grove Farm nomination form". National Register of Historic Places. U.S. National Park Service. Retrieved June 25, 2010.
"Kaipu camp nomination form". National Register of Historic Places. U.S. National Park Service. August 30, 1978. Retrieved June 25, 2010.
Robert J. Schleck; Nathan E. Napoka (April 1, 1979). "Grove Farm Company Locomotives nomination form". National Register of Historic Places. U.S. National Park Service. Retrieved June 25, 2010.