Here is a list of online t-shirt resource sites I’ve come across.
They include t-shirt blanks manufactures, t-shirt wholesalers, and t-shirt screen printers
T-Shirt Screen Printers / Direct to Garment Printing / Promotional Products
T-Shirt Forums – Best T-Shirt Printing Resource Website on the Internet
Shirt Agency (Los Angeles, CA)
TeesOnDemand (Los Angeles, CA)
DIY Shirts (Los Angeles, CA)
TSC Apparel (6 locations in U.S.)
ApparelnBags.com (Tampa, Florida)
Wholesale T-Shirts, T-Shirt Blanks (T-Shirt Blanks Manufacturers)
T-Shirt Blanks (T-Shirt Forums: Best resource on the internet for T-Shirt printers)
Blanks+ – Abby extension 250.
213 Apparel. West Coast Distributor is Magic Apparel Group
Startee Apparel (Santa Fe Springs, CA)
Comfort Colors (Gildan acquisition)
707Apparel (Vernon, CA)
Optima Cotton (Anaheim, CA)
Independent Trading Company (Lots of Hoodies)
Spaze Apparel
Wholesale T-Shirts, T-Shirt Blanks (Resellers. Mixed Brands)
JiffyShirts.com (Cheap Undershirts/T-Shirts)
Alpha Shirt Company also Alpha Broder (Bodek & Rhodes)
Blank Apparel (also http://www.apparelsource.com/, http://www.apparel.com, T-Shirt Wholesaler.com)