The on line DANFS has the erroneous "PYc-16" classification. The print DANFS and other references have "PYc-46" as the designation.
Davis, C. G. (March 1915). "Some New Boats for 1915". The Rudder. Vol. 31, no. 3. New York, N.Y.: The Rudder Publishing Co. pp. 102–104. Retrieved 7 November 2021.
"Smith & Meekes Engineering Company". The Rudder. Vol. 31, no. 2. New York, N.Y.: The Rudder Publishing Co. February 1915. p. 82. Retrieved 7 November 2021.
Davol's initials are seen as "J. J.", "C. A." and "C. J." in some references but is spelled out as Charles J. in others. A particularly interesting one is found in Power Boating (December 1916) regarding Fred Betz owner of the smaller yacht, Sybilla II purchasing Paragon from Charles J. Davol.
Possibly 6 November 1916 as Ships Documents of Rhode Island shows a yacht Paragon owned by Charles J. Davol with similar specifications surrendering Rhode Island documents on that date.
Construction & Repair Bureau (Navy) (1 November 1918). Ships' Data U.S. Naval Vessels. Washington D.C.: U.S. Government Printing Office. pp. 404–409. Retrieved 7 November 2021.
"A Real Destroyer-Type Cruiser". MotorBoating. Vol. 16, no. 5. New York, N.Y.: International Magazine Company. November 1915. pp. 19–20. Retrieved 7 November 2021.
Street, Doc (pseudonym) (December 1916). "Along the Delaware River". Power Boating. Vol. 16, no. 6. Cleveland, Ohio: The Penton Publishing Company. p. 52. Retrieved 7 November 2021.
"Charles J. Davol". India Rubber World. Vol. 60, no. 6. New York, N.Y.: The India Rubber Publishing Company. 1 September 1919. p. 710. Retrieved 7 November 2021.
Official Numbers for Merchant Vessels. Commerce Reports (Report). Washington, D.C.=: Department of Commerce. 30 April 1915. p. 498. Retrieved 8 November 2021.
Vessels Taken Over on Free Lease Basis by Naval Districts. Hearings Before Committee on Naval Affairs of the House of Representatives on Estimates Submitted by the Secretary of the Navy, 1919 (Report). Washington, D.C.: Government Printing Office. 1919. p. 192. Retrieved 7 November 2021.
Naval History And Heritage Command (16 February 2016). "Sybilla III (S. P. 104)". Dictionary of American Naval Fighting Ships. Naval History And Heritage Command. Retrieved 7 November 2021.
Naval History And Heritage Command (21 July 2015). "Impetuous". Dictionary of American Naval Fighting Ships. Naval History And Heritage Command. Retrieved 7 November 2021.
