Construction & Repair Bureau (Navy) (July 1, 1920). Ships' Data U.S. Naval Vessels. Washington D.C.: U.S. Government Printing Office. pp. 218–221. Retrieved 21 October 2021.
NavSource notes the ferry service defaulted on a note to "Worthington Diesel Company" and that company took possession before abandonment.
Radigan, Joseph M. (2021). "Sylph (PY-5)". NavSource Online. Retrieved 22 October 2021.
navy.mil
history.navy.mil
Naval History And Heritage Command (September 25, 2015). "Sylph III (Converted Yacht)". Dictionary of American Naval Fighting Ships. Naval History And Heritage Command. Retrieved 21 October 2021.