Marstrand.com

Center for Environmental Quality
Free information on common water quality problems and treatment techniques.
www.water-research.net/

Lodde Typewriter Co.
Authorized dealer and service center for IBM and others.
www.lodde.com/

Typewriter Serial Number Database
Date your old/ antique typewriter, by using the serial number listings database. Includes additional information for collectors.
www.tw-db.com/

Early Typewriter Collectors Association
Information about ETCetera, the Journal of the Early Typewriter Collectors Association.
typewriter.rydia.net/

Shannon L. Johnson Typewriter Collection
Contains tributes to select early typewriter companies and featured machines form Mr. Johnson's collection. And sources for hard to find supplies for antique typewriters.
homepage.mac.com/