Some time ago, I had gotten this as a PDF; prior to the release of this volume #1 was available for free. Unfortunately over the years I lost my copy, and I'm trying to regain it. I messaged Eric, but from what I can gather he's no longer affiliated with that project. Does anyone have one of the PDF copies? Or, failing that, a physical one?

M.

There is the Mail Research Society and the Armour Research Society. Erik is no longer associated with the latter. There are journals for both. If you want journals for the former then Erik is still the person to contact.