Nanomedicine, Volume I: Basic Capabilities was published in 1999 as ISBN 157059645X (hardcover) and in 2002 as ISBN 1570596808 (softcover). It is also freely available online.
Nanomedicine, Volume IIA: Biocompatibility will be published in late summer 2003 as ISBN 1570597006 (hardcover) and will subsequently be freely available online at. Volumes IIB and III are in preparation.
More information on nanomedicine is available at Freitas' Nanomedicine Nanomedicine Page and medical nanorobot images are available at the Nanomedicine Art Gallery, curated by Freitas.