The Committee to Investigate Copyright Problems (CICP), a non-profit organization dedicated to resolving the conflict known as the "copyright photocopying problem" was joined by the American Society for Testing and Materials (ASTM), a large national publisher of technical and scientific standards, in a plan to simulate a long-proposed solution to the problem. This is a non-profit, voluntary system of access-permissions-and-payments called a copyright clearinghouse (CHC). A moratorium contract between ASTM and its client organizations guaranteed against infringement in making up to 50 multiple copies at a time of any ASTM publication. In return these organizations supplied CICP with data for analysis of their copying. Both CICP and ASTM pledged their support for transforming the experiment into a permanent, national CHC. At this point Government support for CICP suddently ended. CICP became inactive, while volunteers in ASTM, CICP and elsewhere carried on the reduced and modified collection and analysis of moratorium data. This report analyzes the data obtainable, finds a number of facts useful for copyright and CHC economics, and supports the hypothesis that such a system would largely resolve the copyright photocopying problem. A renewed effort is recommended, starting with more extensive and intensive studies. (Author/NH)