"Almost all disciplines make extensive use of the resources provided by slide libraries and picture collections. Growing demands for pictorial material have stimulated a concern for making slide and picture collections more useful and more usable by better physical arrangement and more thorough indexing. The system provides a classification scheme for the organization of general collections of slides and pictures with a broad subject coverage as opposed to the more typical slide classification system which deals with a single subject field. A suggested method of automatic indexing is included. This document will be useful to builders of general collections, and is published as a tool for libraries and other collectors of slides and pictures who have had no ready-made system of classification available."