Top links are listed here for your modeling pleasure. 

For WWI aviation subjects;

http://www.aeroscale.co.uk/

Aeroscale is one of the best sites discussing all eras of aviation modeling.  See their Early Aviation forum for WWI information and build information.

http://www.lafayettefoundation.org/foundation.html

A great museum site for uniforms and aviation replicas.  Their archives are massive specializing in American and German documents.

http://www.theaerodrome.com/

The Aerodrome is generally one of the best WWI aviation forums. 

http://wwimodeler.com/esc/links-frame.html

A free site that has an older but very extensive list of WWI kit links.

http://www.amug.org/~copperst/

Copper State Models is simply the best at producing fine aviation kits (especially WWI) in resin today.

http://www.crossandcockade.com/

Cross and Cockade is one of the oldest andf finest societies concerning WWI aviation.

http://www.fokkerdr1.com/

Privately owned website based on information concerning The Fokker Dr.I and V type airframes.

http://www.overthefront.com/main/index.html

Overthefront is an American based league of WWI aviation historians.

http://www.rodenplant.com/

Has some of the best WWI aviation model kits anywhere.

http://www.eduard.cz

Has some of the best WWI aviation kit subjects.

http://www.letletlet-warplanes.com/

A privately owned website where among other subjects, various aspects of WWI aviation and kit building are discussed. 

http://memorial.flight.free.fr/

Memorial Flight has wonderfully restored and replica aircraft.

http://www.windsockdatafilespecials.co.uk/index.html

Windsock is the best source for updated information on WWI aviation profiles.

http://www.misterkitusa.com

Misterkit USA has a unique supply of the Misterkit paint stocks ( He pays extra so the jars get topped off.)  You won't get that in Europe.  Also he carries small quantities of Roden kits and Part of Poland  photoetch designed specifically for the Roden kits.  He is a fellow modeler like us and  his prices are VERY REASONABLE compared to others.

http://www.seawings.co.uk:80/

"SEAWINGS web site, the largest flying boat reference web site in the world and the home of the flying boat - in detail - on the web; specialising in providing information for the scale modeler, historian and enthusiast in the form of historic photographs, plans and articles. . ."