Robert Ashley, The Once Group, Prospectus
Updated August 26, 2026
| Lot number | 0014 |
| Estimate | $300 - $400 |
| Opening bid | $150 |
| Auction | Paper No. 8 |
| Date | September 13, 2026 at 1:00 PM EDT |
| Auction house | Catalog Projects |
| Location | New York, New York |
Ann Arbor, c. 1960s 10" x 7" offset print Bifold prospectus published by The ONCE Group, outlining the ensemble’s performances, philosophy, and related activity. The ONCE Group of composers and
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- The Once Group (Robert Ashley, Mary Ashley, Gordon Mumma, Robert Rauschenberg, et al.), First New
- Institute of Contemporary Art, As Found, Press Release
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- Robert Whitman, Jim Dine, The Once Group, et al., The First New York Theatre Rally, Flyer
- Allan Kaprow, Self-Service: A Happening by Allan Kaprow
- Robert Whitman, Deborah Hay, Tony Holder, Claes Oldenburg, Robert Rauschenberg, et al., First New
- Allan Kaprow, Institute of Contemporary Art, Press Release