At its national convention in Boston in the summer of 1886 the _Turnerbund_ authorized its executive committee to appoint delegates to the second annual meeting of the American Association for the Advancement of Physical Education, and before this body, in Brooklyn on the 26th of November following, three papers were accordingly read by representatives thus named, and an exhibition of German gymnastics was given by classes from New York and Brooklyn societies. This was the beginning of a systematic campaign undertaken to acquaint American educators and the public in general with the claims and merits of the German system. Representation by delegates at the annual meetings of the American Association for the Advancement of Physical Education was continued, and at Philadelphia in 1892 a paper by William A. Stecher made an especially favorable impression; a special committee of well-known men (Doctors Hitchcock, Sargent, and Hartwell) was invited to attend the national _Turnfest_ in Milwaukee in 1893 as guests of the _Turnerbund_, and other similar committees were appointed at several succeeding _Turnfeste_; there were demonstrations and exhibits at the World’s Fair in Chicago (1893), together with the distribution of great quantities of printed matter; a monthly periodical, _Mind and Body_, started in March, 1894, has been issued regularly ever since;[271] a summer school was held at Milwaukee under the auspices of the _Turnerbund_ in 1895 and the three years following; and a “Text-book of German-American Gymnastics” was published in 1896.[272] For years the _Turnvereine_ had provided classes for children of school age, directed by their own teachers of gymnastics and held in their own gymnasia. These enrolled 13,161 boys and 3888 girls in January of 1886, and ten years later the numbers had risen to 18,582 boys and 10,274 girls. But within the same decade of expansion (1886-1896) falls the introduction of physical training into the public school systems of many cities under the supervision of graduates from the Normal School of the _Turnerbund_. Among the very first to take such a step was Kansas City, Missouri, in 1885, and the career of Carl Betz, the man who proposed the action and himself directed the work during the next thirteen years, may be taken as typical of this phase of the second period in the history of German-American gymnastics.