, Invitation from Hermann Gruber to Mike Parr to participate in the 'Mail art-book project: the part and the whole'. Vienna, Austria, 1980. Enlarge 1 /1

Invitation from Hermann Gruber to Mike Parr to participate in the 'Mail art-book project: the part and the whole'. Vienna, Austria, 1980. Materials & Technique: ephemera/documentation, Acknowledgement: Gift of Mike Parr 2012