Six full-length model exams plus a diagnostic test are presented to prepare applicants for a variety of jobs in the U.S. Postal Service. Model tests are patterned after the U.S. Government's Test Battery 460/470. All questions are answered and explained. This manual's practice tests apply to the following job designations: postal clerks, city and rural mail carriers, mail handlers, mail processors, distribution machine clerks, flat sorting machine operators and mark-up clerks. The author also provides special drills designed to improve test-taking skills in memory, speed, and following oral directions, including drills in number series and address checking.