Civil Service Library Series. Vol. I. 100 Civil Service Examinations, 1933.Civil Service Library Series. Vol. II. Postal Positions, 1934.Civil Service Library Series. Vol. III, File Clerk, 1934.Civil Service Library Series. Vol. IV, Customs and Immigration, 1934.Civil Service Library Series. Vol. V, Stenographer and Typist, 1934.Civil Service Library Series. Vol. VI, General Office Positions, 1934.Civil Service Library Series. Vol. VII, Bookkeeping and Auditing, 1934.Civil Service Library Series. Vol. IX, Mental Alertness Tests, 1934.