http://www.afwing.com/gallery/beijing.htm

 

http://www.warbirdinformationexchange.org/

 

http://www.aero-web.org/specs/northrop/p-61a.htm

 

http://www.nationalmuseum.af.mil/factsheets/factsheet.asp?id=2216

 

http://www.skylighters.org/night_fighters/p61info.html

 

http://blog.kermitweeks.com/

 

http://www.cbrnp.com/profiles/quarter2/p-61_euro.htm

 

http://tanks45.tripod.com/Jets45/Histories/Northrop-P-61/P61_BlackWidow.htm

 

http://virgin-widow.com/

 

http://en.wikipedia.org/wiki/P-61_Black_Widow

 

http://www.smso.net/P-61_Black_Widow

 

http://www.williammaloney.com/Aviation/USAFMuseum/WWII/BlackWidow/P61BlackWidow.htm

 

http://www.aircraft-list.com/db/Northrop_P-61_Black_Widow/55/

 

http://www.ww2aircraft.net/forum/aircraft-pictures/p-61-black-widow-requested-pics-13326.html

 

http://www.zenoswarbirdvideos.com/main.html

 

http://1000aircraftphotos.com/Contributions/Larkins/7718.htm

 

http://www.mugualumni.org/secretarsenal/page10.html