SidecarJohn

http://www.autosoviet.altervista.org/index3.htm - Interesting site if you are interested in Soviet bloc vehicles. Sidecars included.

http://www.eurospares.com/ - Amazing site with enough stuff to take days to appreciate. Be prepared to give up some time, but well worth it.

https://www.motorcyclecruiser.com/ - US chopper site. Not everyone's taste, but check it out for useful technical information.

https://www.pashnit.com/ - Motorcycle site with loads of great links to sidecar sites large and small.

https://www.totalmotorcycle.com/ - Information a plenty on bikes. Well worth a look.

http://www.wehrmachtsgespann.de/zuendappenglisch/index.htm#index - Site devoted to the Zundapp KS750 - the Green Elephant.