The National League of Compulsory Education Officials, beginning with its 13th annual convention in 1923 and ending with the 30th annual convention in 1940, published annual proceedings of each convention. This article includes both a topic and presenter index and a summary of the 1935 and 1941 annual conventions, based on newspaper articles, for which no annual proceedings are available. These indexes will be of interest to those seeking a better understanding of the early pioneering work of the National League and its significant role in the professional development of the school attendance official.