Hi Geoff,
Nice spot. It is indeed the XP-41. It appears that the 10th AB was a destination for a number of unusual aircraft.I have a USAAF thread on the allied airforces board of this site at:
http://forum.12oclockhigh.net/showth...ighlight=Clint
In which a YP-37 with 10AB tail markings features. Alas the photo I linked to is of course long gone.
Regards,
Clint