An interesting distinction is made here between photographs/art (note the requirements) and everything else. I would imagine you are free to request further information from the contact listed if you feel the need ...

http://www.northropgrumman.com/ipm/tmpolicy.html


Another interesting point: " ...Grumman, as the manufacturer, owns the trademarks (e.g. "F-14", "Corsair") in the vehicles it makes." Since it didn't design or develop the F4U and only briefly owned part of Vought in the '90s, this must refer to the F2G which they did develop. Another lost aircraft ...