Correspondence, articles, photographs, and scrapbooks relating to Annan's career as a civil engineer, especially in railroad construction in Mexico and the southwestern United States, and including reminiscences of bullfights and other aspects of social life in Mexico; articles and correspondence revealing his active interest in philately and phonetics, and papers relating to the American Philatelic Association; correspondence, contracts, and similar material concerning the erection of his residence in St. Paul; and articles on civic improvement in St. Paul.
