Paper

Conception Editions ARC - Offers 3D model collection of buildings of Montreal, Canada.
http://www.copticarchitecture.com/a.htm

The Paper Airplane Company - Sells 1/40th scale paper model airplanes.
http://www.thepaperairplanecompany.com

Micromodels USA - Offers historical boats and architectural model.
http://www.micromodelsusa.com/

Geoblox - Sells patterns that demonstrate geology concepts.
http://www.geoblox.com/

Heritage Models - Architectural card models of notable buildings in and around London, including the much acclaimed model kit of Shakespeare's Globe Theatre.
http://home.clara.net/rogerpattenden/

Impact Models - Designs and markets architectural card such as Victorian houses, town centre shops, town hall, and banks. Mail order.
http://impactmodels.co.uk/

Vita Paper Models - Offers a variety of aviation, transportation, ships, and architectural models.
http://www.purpleline.com/vita/vitamain.htm

Scale Paper International - Offers a variety of architectural, aircrafts, military vehicles and kids models, and magazine.
http://www.e-papermodels.com/

Gryf Hobby - Distributor of World War II vehicles and aircrafts and architectural models. Poland.
http://www.gryfhobby.com/index_e.htm

PROTOTYP - Specialist in 1:24 paper model racing cars. The subjects are thoroughly researched and the models are extensively detailed.
http://prototyp.org/

Cardstock - Offers automobile, ships, civil, WWI and WWII aircraft.
http://www.teuton.org/dbarnett/

Fiddlersgreen - Sells paper models of airplanes, buildings, and other items. Many free models to download.
http://www.fiddlersgreen.net/

Hobby Factory - Offers a wide variety of models such as trains, military vehicles, ships, aircraft, and accessories.
http://www.hobbyfactory.com/

Paper Creations - Scale and non-scale paper models. Printed on ordinary printer paper, these kits don't look like paper when they are done.
http://www.papercreate.com

Paper Model Store - Offers Polish and East European card models, with an assortment of military ship and airplane models.
http://www.papermodelstore.com

IDA 3D - Offers kits from flat sheets to form replicas of buildings from around the world.
http://www.ida3d.com

Agoria Scale Models - Offers a movie theater model.
http://www.agoria.com/model.html

Paper Landmarks - Pre-cut 3D world landmarks including the Eiffel Tower, Chrysler Building, Chicago skyscrapers, Leaning Tower of Pisa. Order by pieces or theme sets worldwide.
http://www.paperlandmarks.com/

Origami Papercraft - Offers airplanes, buses, trains.
http://www.origamipapercraft.com

Daisey Designs - Provides race cars, racing airplanes and Chevy Corvairs sold as PDF downloads.
http://www.daisey-designs.com