1. Untitled (Correspondence from Michael haerdter to Tom Marioni/MOCA). November 11, 1981. Artist: Haerdter, Michael Classification: Work on paper Materials: Letter. Black typescript on Kunstlerhaus Bethanien stationery. Dimensions: 11 3/4 x 8 1/4 in. Accession Number: 1995.46.13.13
2. Untitled (Correspondence from Michael Haerdter to Tom Marioni/MOCA). July 13, 1981. Artist: Haerdter, Michael Classification: Work on paper Materials: Letter. Black typescript on photocopy. Dimensions: 11 3/4 x 8 1/4 in. Accession Number: 1995.46.13.61
3. Untitled (Correspondence from Michael Haerdter to Tom Marioni/MOCA). January 14, 1982. Artist: Haerdter, Michael Classification: Work on paper Materials: Letter. Black ball point pen on photocopy. Dimensions: 11 3/4 x 8 1/4 in. Accession Number: 1995.46.14.16