Info / Catalog / Plans for speaker kits from Accurate Sound, 1213 M Street, Lincoln NE

In 1977 I built a pair of transmission line loudspeakers, similar to the famous Webb design, but somewhat larger.  When I went to graduate school in 1980, they were too bulky to bring along, so I sold them.  Now, both myself and a friend from those days want to build a couple of pairs.  So I'd like to locate a copy of the plans.

With that as an intro, does anyone here have a catalog or plans from the company that produced the kit?  It was called Accurate Sound,  and was at 1213 M Street, Lincoln NE 68508.  Below, I've reproduced a copy of an advertisement of theirs, from the January 1977 issue of Audio Amateur, page 49.

Cheers,

     Bruce