Information from Joe Baugher's web site
Model G-18. MSN 356. First flight Sep 2, 1937. Assigned to NACA Langley Memorial Aeronautical Laboratory, Langley Field, VA 1937. Delivered to US Navy at NAS Anacostia Dec 23, 1937. Later converted to XF4F-3, model G-36, MSN 356. First flight Feb 12, 1939. Assigned to NAS Anacostia, DC. Assigned to NACA Langley Memorial Aeronautical Laboratory, Langley Field, VA Aug 10, 1939.(VF-72) Crashed at NAS Norfolk Dec 17, 1940. Pilot killed.
Aeroplane Photo Supply No. 682
Aeroplane Photo Supply No. 1257