This document provides an overview of the third edition of "A Counselor's Guide to Career Assessment Instruments" to be published in 1994 and a brief review of the nearly 300 instruments included in the guide. The history of the guide's development and its major components are outlined. Presented next are brief descriptions of 16 recently developed or revised instruments. The guide's tentative table of contents is included along with the following: a list of instrument names/reviewers and publishers of selected comprehensive aptitude and companion measures, interest inventories, values/satisfaction assessment instruments, career development/career maturity inventories, personality inventories, and career assessment instruments designed for disabled and disadvantaged persons. The remaining three-fourths of the document consists of the following: tables of information about 35 multiple aptitude, achievement, and comprehensive measures; 39 specific aptitude and achievement measures; 43 interest inventories; 23 measures of work values, satisfaction, and environments; 13 card sorts; 16 career development/maturity instruments; 26 personality instruments; and 43 instruments for disabled and disadvantaged populations. Included in the tables are the name/publisher/date of each instrument along with its intended population, citations of published references to the instrument, and a brief description of its contents. (MN)