96th Bomb Group http://96bg.org/

398th Bomb Group http://www.398th.org/

Air Force Historical Research Agency https://www.afhra.af.mil/

Americans in the RAF: http://immigrantsofwar.blogspot.com/

Amsterdam (map airwar only): https://maps.amsterdam.nl/woii/?LANG=nl

Battle of Britain http://battleofbritain1940.com/

Commonwealth War Graves Commission: https://www.cwgc.org/

Dornier Do-24: www.dornierdo24k.nl

Fold 3 https://www.fold3.com/

Gezichten van vrijheid (verhalen over de oorlog): http://www.gezichtenvanvrijheid.nl/

IKME Indicatieve Kaart Militair Erfgoed: http://www.ikme.nl/

International Bomber Command Centre Losses Database https://losses.internationalbcc.co.uk/

Lancaster LM508 (Twitterfeed): https://twitter.com/lancasterwdam

Mustangsmustangs http://mustangsmustangs.com/p-51/

Onderdelen met nummer of tekst : https://www.facebook.com/groups/941506995941029/

Onderdelen zonder nummer: https://www.facebook.com/groups/avarch/

RAF Commands http://www.rafcommands.com/

Slag om de Grebbeberg: https://www.grebbeberg.nl/

Stalag XVII http://stalag17b.com/

Stichting Historie Vliegveld Valkenburg www.vliegveldvalkenburg.nl

WWII Aircraft Performance http://www.wwiiaircraftperformance.org/

WWII today http://ww2today.com/