IIRC, the WB ALBUM is the (in)famous demo tape the band sent to said label, then returned, addressed to "Residents," inspiring the collective's eventual name / identity. Some of this material has seen official release on WB:RMX.
As Moms has pointed out, the history of the collective is actually one of it becoming gradually less and less so, to the extent that "The Residents" might now be, for all intents and purposes, a solo act + "hired" players.