|  | 
| Ruscha's business card | 
|  | 
| Iain Baxter with an inflatable cloud | 
|  | 
| Nancy Spero letter to Lucy R. Lippard | 
|  | 
| Page 68-18 from manuscript for 'Six Years- The Dematerialization of the Art Object from 1966-1972' | 
|  | 
| Ruscha's business card | 
|  | 
| Iain Baxter with an inflatable cloud | 
|  | 
| Nancy Spero letter to Lucy R. Lippard | 
|  | 
| Page 68-18 from manuscript for 'Six Years- The Dematerialization of the Art Object from 1966-1972' | 
