(All the Riddles of this World)

> german version

Light projection, 1988
(2 slide projectors, 20 slides)
Each day during the course of two weeks two different slides showing book signatures, page numbers and line references were projected left and right above the reference catalogue.
Each one refers to a certain sentence in a book within the library. The reference codes (call numbers) required to find these sentences appear on the wall as a series of luminous digits similar to the number cards in a church indicating particular prayer book sections or hymn verses.

Shown at:

1988 Münster, Library of Psychological Science