The subject index is a high quality descriptive index. This is an annual release from Educational Testing Service. It includes 50-100 tests each year. They are unpublished and otherwise available only from the author. Tests included may be reproduced for review or research.
Arrangement is by accession number, there are subject, title and author indexes in each volume.
The series has been published since 1975. There is one cumulative index for 1975-1987, but looking through the remaining annual volumes can be tedious. The Educational Testing Service has an extensive library of both commercial and unpublished tests. Their series of ETS Test Collection Catalogs serves as a guide to available tests in the collection. Each entry provides identification, description, and availability information for the test.