Tank museums -
http://www.museedesblindes.fr/
1/6 scale tanks and bigger! -
Useful reference sites -
www.achtungpanzer.com
https://www.titlemax.com/articles/cars-tanks-airplanes-of-wwii/
Magazines -
http://mmi.guidelinepublications.co.uk/
Professional model makers (1/16 scale specialists) -
www.precision-panzer.moonfruit.com
Forums -
www.rctankwarfare.co.uk
www.britmodeller.com
http://rctanksaustralia.com/forum/index.php?sid=1e2b8878cc933a6328a960d6aecab2a1
www.mmodell.de
Model ships -
www.waverleymodels.co.uk
Display cabinets -
http://www.toymandisplays.com/index.html - highly recommended!
Miscellaneous -