551. U. S. Employment Service bulletin, v. 1, no. 6-9 and 9a, supplement; Mar. 4-25, 1918. Bookmark Corporate/Agency Authors: Employment Service and Labor Department Publisher: Employment Service Date: [1918.]
552. Boy power, official bulletin of United States Boys' Working Reserve, v. 1, no. 1-10; Nov. 15, 1917-Sept. 15, 1918. Bookmark Corporate/Agency Authors: Employment Service and Labor Department Publisher: Employment Service Date: [1917-18.]