1. First Annual Convention of the National Police Association of the United States : held at Chicago, Ill., Thursday and Friday, Dec. 15 and 16, 1881 : official report. Title: First Annual Convention of the National Police Association of the United States : held at Chicago, Ill., Thursday and Friday, Dec. 15 and 16, 1881 : official report. Date: [1881] Author: National Police Association of the United States. Convention (1st : 1881 : Chicago, Ill.) Collecting Area: Rare Books