Letters from Mu (Part I) is available from Printed Matter (NYC) or directly from the publisher, Voix Editions (Elne, France).

ADDENDUM: A second installment from "work in progress," Fragments from Mu:
A sequel, was published in 2007; a third installment, Nexus of Evil: Late fragments, 1-7, appeared in 2009. Both are published by First Intensity Press, and are available for sale from Small Press Distribution.