Destruction ritual tape, ash borer discography, more @ http://www.discogs.com/seller/BobbyBenoit
located in canada.

Also Kamlanyie pre-release tape (live version of skagos basically but they released a tape)
Some Tension tapes, Metastasis/Cistemized Violence split tape

Listed my discogs cuz it's easier than typing it all out. (take a peek theres some sweet stuff!)

Lookingfor!
Old black metal/crust/grind type zines
Or black metal/crust/grind tapes records
Basically any Corrupted vinyl
Hellhammer vinyl/tapes
Thou/Leech or Skagos Ast tapes/ woodsmoke doom albums (elu of the nine/Munn)
gza - liquid swords vinyl/tape (or wutangs 36 chambers)

Those are all just suggestions, so offer stuff similar or whatnot!