Breaking World Records - Home of Anthro Rex, Def Neg, Ben George 7 & other western Mass mayhem, and a cheap CDR duplication service.
Ecstatic Yod Mailorder - Byron Coley's rare lp & cd mailorder, Florence MA
Elefantplatte Records - CDR reissue label, one of a kind albums rescued from the sands of time. Home of Frost Giant's "Heavy Encounter" CD.
Show & Tell Music - Many galleries of weird & disturbing album covers.
The Acid Archives of Underground Sounds - Good reference for private press / obscure psych lps.