Dale Kemper. He was selling copies of his unpublished manuscript for a FASA Far Frontiers supplement on eBay for the last couple of years.
I bought one - it's (mostly) the same text/data as was published serially in Knight's The Traveller Chronicle a few years after the Aries print. (I've never seen the Aries issue, but apparently it left out significant portions).
I asked Dale for permission to digitize the data and include it on travellermap.com which was granted, so you can see it here:
http://www.travellermap.com/?sector=Far+Frontiers&hex=1630 (Reminder that it is the rimward half only; the coreward half is by James Kundert a.k.a. GypsyComet, included by seperate permission). The borders and routes are per the manuscript, as well. You can also see a "LBB"-style HTML mockup:
http://www.travellermap.com/sector.htm?sector=Far+Frontiers (since it's based on CT data, the PBG are all "100" or "101")
Mickazoid and I also cooperated on a karma-generating project to digitize the written portion of the manuscript, with a goal of handing back a PDF to Dale and/or Marc, who had apparently been in touch about potential digital distribution. However, I was distracted by other shiny things so the project stalled... but it's mostly complete. (It really just needs a J. Andrew Keith-style image for the cover, honestly. Has the copyright for those shifted to Marc?)
I can revivify that project if there's sufficient interest from Marc.