T-Shirts:
Phish Dry Goods
Little Hippie
Dyework
T-Shirt King
Freakshop.com
Star 500
Rainbow Outfitters
Concert Tee
1 Great Shirt
Grateful Dead Official Store
E Deadshop

Lot Shirts:
Knighthood Tees
Soul-Flower
Dharma Rose
Drew B Designs
MadCarters
Irie Lion
Phenster
Dysphunktion
Highdesigns
Jamworld Studios
Phish Parking Lot Style
Jiggy.com

Patchwork:
Sugarmag Designs

Parody Shirts/non music:
T-Shirt Hell
T-Shirts That Suck