I do spend quite a lot of time on the internet looking for information about the machines that interest me. Over time I tend to lose track of them so here is a list of links - as much a reminder to myself as potentially of interest to others. So, it you too like German motorcycles, scooters and two-stroke engined cars, enjoy! I'll be updating these links periodically too.
Ariel Leader
Review of the Ariel Leader - http://sump-publishing.co.uk/ariel%20leader.htm
The Australian Ariel owners club - http://www.australian-ariel-register.com/
http://ariel-square-four.blogspot.co.uk/
BSA
http://www.mistgreen.com/mistgreen/index.htm
http://bsabantam.blogspot.com
http://mybsabantamd7.blogspot.com.au/
Auto-Union / DKW
An excellent resource for DKW motorcycles - http://www.dkw-geyer.com/DKW-Geyer/e/index.htm
More about DKW motorcycles (in German) - http://www.dkw-motorraeder.de/tiki-index.php
Well written history from the Australian Unique Cars website - http://www.uniquecarsandparts.com.au/lost_marques_dkw.htm
DKW schnellaster vans - http://www.dkw-schnellaster.de/
DKW Maintal - https://www.dkw-autounion.de/
http://www.karmannghias.org/DKW3.htm
DKW Club of USA - http://lotsoc.com/dkw/dkw1.html
DKW Club of UK - http://www.dkw.org.uk/
DKW Club of South Africa - http://www.dyna.co.za/cars/dkw.htm
Auto-Union Veteran Club - http://www.auto-union-veteranen-club.de/startseite.html
Dutch DKW club - http://www.dkwclub.nl/
Spanish language website with lots of great photos of Auto Union cars from the 1930s and 40s. http://www.webkits.com.br/news/templates/news.asp?articleid=373&zoneid=30
Auto-Union 1000SP - http://www.ritzsite.nl/DKW1000SP/01_SP.htm
My own archive of DKW/Auto Union history and documents - https://dkwautounionproject.blogspot.com/
NSU
http://www.nsuprinz.com/
In the Second World War NSU built these interesting little motorcycle tractors.
http://www.kettenkrad.com/
http://www.kettenkrad.de/index_e.htm
Messerschmitt
http://www.messerschmitt.co.uk/
http://www.cybermotorcycle.com/euro/brands/messerschmitt.htm
Tempo trucks
http://www.tempo-tempo.de/
http://www.tempo-dienst.de/english/index.html
http://www.oldievan.de/html/tempo_hanseat.html
http://www.oldbug.com/tempo.htm
http://www.thetruthaboutcars.com/2010/10/tempo-boy-the-other-tempo-three-wheeled-truck-200cc-and-world-speed-record-holder/
http://www.hanomag-kurier.de/willich.html
Barkas B1000 vans
http://www.barkas.de/
Borgwards, Lloyds and Hansas
http://www.borgwardisabella.com/
https://www.borgward-ig.de/
http://www.lloydselig.com/
http://www.baumaschinenbilder.de - Borgward Trucks
http://forums.vwvortex.com/-The-Borgward-empire
http://www.goliath-veteranen-club.de/
http://www.oldtimer-tv.com/oldtimer/DE/oldtimer/index.php?Seite=205 (video and photos)
http://www.buntbahn.de/modellbau/printview.php?t=8327&start=0 (lots of photos of old German trucks and commercials)
Zundapp
http://www.zundappfool.com/
Goggomobil
http://goggodart.com/goggo.html
https://goggomobil.com/
http://www.cybecom.com.au/Goggomobil/
IWL
1. EMW and IWL restorations
http://emw340-2.com/
2. IWL Stadtroller website
http://www.iwl-stadtroller-ig.de/
http://www.iwl-stadtroller-berlin.de/
3. IWL Roller website
http://www.iwlroller.de/index_eng.html
4. Troll owners guide (in German)
http://www.ostmotorrad.de/andere/iwl/trollb/TROLLB.HTM
5. IWL Calendar
http://www.motorradmeistermilz.de/
https://iwl-kalender.myshopify.com/
BMW motorcycles
http://www.vintagebmw.org
http://www.earlesfork.com/
http://www.bmbikes.co.uk/information.htm
BMW Isetta
http://bzisettas.blogspot.com/
Volkswagen
My history of the evolution of the Volkswagen (in three parts):
https://heinkelscooter.blogspot.com/2012/03/volkswagen-world-beating-peoples-car.html
This is the amazing story of the discovery and restoration of a 1943 KDF prototype discovered in Lithuanian. Prior to its purchase by Grundmann the story was tracked in a very long forum discussion on The Samba website, here: http://www.thesamba.com/vw/forum/viewtopic.php?t=340552
Microcars
http://microcarmuseum.com/virtualtour.html Bruce Weiner's amazing microcar museum (it's all there)
http://www.microcar.org/
http://minutia-microcarsminicars.blogspot.com/
BMW motorcycles
http://www.vintagebmw.org
http://www.earlesfork.com/
http://www.bmbikes.co.uk/information.htm
BMW Isetta
http://bzisettas.blogspot.com/
Volkswagen
My history of the evolution of the Volkswagen (in three parts):
https://heinkelscooter.blogspot.com/2012/03/volkswagen-world-beating-peoples-car.html
This is the amazing story of the discovery and restoration of a 1943 KDF prototype discovered in Lithuanian. Prior to its purchase by Grundmann the story was tracked in a very long forum discussion on The Samba website, here: http://www.thesamba.com/vw/forum/viewtopic.php?t=340552
Microcars
http://microcarmuseum.com/virtualtour.html Bruce Weiner's amazing microcar museum (it's all there)
http://www.microcar.org/
http://minutia-microcarsminicars.blogspot.com/
https://www.darkroastedblend.com/2007/08/worlds-smallest-vehicles.html
http://www.darkroastedblend.com/2008/05/worlds-smallest-cars-part-2.html
http://www.darkroastedblend.com/2010/07/adorable-micro-cars-part-3.html
http://www.erik.gjermundsen.net/index.htm
My revised favourites list: https://heinkelscooter.blogspot.com/2011/01/revised-favourites-list.html
http://www.darkroastedblend.com/2008/05/worlds-smallest-cars-part-2.html
http://www.darkroastedblend.com/2010/07/adorable-micro-cars-part-3.html
http://www.erik.gjermundsen.net/index.htm
My revised favourites list: https://heinkelscooter.blogspot.com/2011/01/revised-favourites-list.html