PAD-US Partnership report, A Map for the Future, has been released and is available for download. The 24 page report provides the rationale and proposal for fully implementing PAD-US.
Larry Orman 2009-08-04

PAD-US version 1.0 was published in early April 2009, by the USGS Gap Analysis Program, on behalf of the PAD-US Partnership. You can access it at the USGS GAP website
Larry Orman 2009-04-30