Lars Müller publishers’ comprehensive retrospective of one of the most important magazines on typography, The book uses an unreleased revival of Haas Unica, named Unica Intermediate designed by Louise Paradis.
Joe Bauldoff has presented an archive of working sketches for the typeface on his Flickr with this accompanying text:
In 1980, Team’77 (consisting of André Gürtler, Erich Gschwind and Christian Mengelt) set out to “correct” common issues found in the grotesk typefaces at the time, including Helvetica.
The Haas type foundry, birthplace of Helvetica (originally Neue Grotesk), contracted Gürtler and Team’77 to audit the Helvetica typeface and reissue an improved version.
Presently, the Linotype and Scangraphic foundries both claim ownership of the type family. Because of this, Haas Unica is commercially unavailable.
Unica Intermediate can also be seen in use in the web archive of TM.