The second photo shows the original design, which was a crewed aircraft (two crew members). The first flight of the prototype was April 8, 1943. But then the Navy asked for a redesign to a single seat attack aircraft, and the first flight of that prototype was March 5, 1944, and a contract was...
I've actually started to update that Detail & Scale volume (and the other F4F volume from the year 2000) for re-publishing and I've learned that even on the XF4F-2, Grumman had built in the capability to carry a 100lb bomb under each wing.
Here's a montage for our new digital book "SBD Dauntless in Detail & Scale". This is an updated and expanded edition of the long out-of-print hard copy "SBD Dauntless in Detail & Scale" covering one of the few combat aircraft to serve from the beginning to the end of WWII. The pivotal role the...