http://www.warbirdsresourcegroup.org/URG/index.html
http://www.warbirdsresourcegroup.org/wrglinks.html
http://www.warbirdsofindia.com/
http://www.preservedaxisaircraft.com/
http://www.fokkerdr1.com/
http://www.ju86.com/
http://www.luftarchiv.de/
http://www.junkers.de.vu/
http://www.ju88.net/
http://www.ju388.de/
http://www.gavs.it/
http://www.paulnann.com/
http://www.hawkertempest.se/
http://www.b17bomber.de/eng/index.php
http://www.bf-109.com/
http://www.jg27.de/
http://www.preservedaxisaircraft.com/
http://web.tiscalinet.it/warbirds/warbirds/
http://www.dornier24.com/
http://www.lwag.org/index.php