Here, Johnson (visible at top left) employs a booth as an affordable studio for documenting works from his Potato Masher series. Sitting in the photo booth, he simply held up one collage after another for the automatic camera. The resulting sequence of vertical photo strips combines the qualities of a crude performance document and an art gallery’s inventory sheet. David Hockney’s Mother’s Potato Masher appears, not yet finished, fourth from the left in the bottom row.