Bosch Magneto Veteran Era great site for documentation on old Bosch magnetos
Vintagent a great vintage motorcycle site.
Barnstormers a rather eccentric Kiwi motorcycle site.
Car and Classic UK great car classifieds to drool over.
GSCCR my local car club.
Narrywoolan a site about all sorts of things including the Lancia Aprilia.
Prewar Car the site for old cars and parts.
Vintage Knowledge, hints and tips section is worth a look.
Classic fasteners good Aussie site will send small quantities.
Restoration Supply Company good general car hardware (US)
Paul Beck Vintage Supplies parts for proper cars
Classic Dynamo & Regulator Conversions also LED lamps
Australian Lancia Register The Australian Lancia Club
Delage Club of Australia The Australian Delage Club
Les Anciennes Looking for an old Froggy Car, this could be the place.