Nana's Dear Collection - the MOST comprehensive Duffy product fansite for older costumes! AMAZING!
Disney Bear Duffy - an extremely comprehensive Japanese site, loaded with pics of nearly all Duffy costumes!
Duffy the Disney Bear - my friend's superb English fansite, with great, in-depth history in English!
Duffy Travels - a super cute Duffy fan blog that feels like having afternoon tea with teddies!^^
Tokyo Disney Sweets - An American Girl in Japan Searching for Dream, Sweets, and LOVE!
(another friend's blog, sometimes about Duffy)
MiceChat - Duffy Forum / Duffeteer Society of Tenders, Artists & Romantics
Tokyo Disney Resort (English)
Tokyo Disney Resort (Japanese)
Cape Cod is Duffy's Hometown! (Japanese-only)