The scan here represents the cover artwork but not necessarily the paper stock of the printed copies.
Outside In was a long-running series that collected artist self-portraits. Originally begun by Steve Willis, other editor-publishers were Michael Dowers, Edd Vick/Hal Hargit and Bruce Chrislip.
Outside In-formation is a booklet released during the Vick/Hargit run which included a history of the series, info on contributing, upcoming themes and also a handy index of every contributor for the first 29 issues. Also: the back cover features a self-portrait by Jacques Boivin (he sent two and this is the one that wasn't used in an actual issue) and the front cover features letter art by Barry Brandon.
Collection of doodles from correspondence with cartoonists.
There may be more contributors than listed above.