In the process of making a public art work for the new San Francisco Main Library, we returned to our early memories of browsing the library: to the ritual search and surprise attendant to opening any single drawer within the corridor of wooden cases that held the library card catalog. Each paper card within that system of stored information was marked, smudged and yellowed with the accumulated evidence of its use over time. With the move to the new main library building, those paper cards and w...