Hobby Builders Supply - online catalog
Kellogg's Dolls' Houses - beautiful handmade doll houses for sale; store in New York.
Miniatures at Hildegard's Homepage
Micro-Mark - "More than 2,500 hard-to-find tools and supplies for building scale models of trains, ships, planes, automobiles and dollhouses."
Quilted Minatures for Collectors
Suzi's Dollhouses and Miniatures - on-line store
Dekorativ Miniatures - "handknotted miniature carpets"