Scope and content Various Polo publications mostly from the United Kingdom in the 1920s. Indoor Polo Association of the United States of America Official Annual 1923-1924; Constitution, By-Laws and Playing Rules of Indoor Polo and Ancient History of Polo published by Solon L. Frank, 1929; The Polo Year Book for 1929 published by the proprietors of The Polo Monthly, London, includes information and schedules for many international polo teams; Two issues of The Polo Monthly, Volume 39 number 2, May, and number...