NUMBERS TO FOLLOW April 1. GREAT ART GALLERIES OF THE WORLD--THE NATIONAL GALLERY, LONDON. _By Professor John C. Van Dyke._ April 15. MASTERS OF THE VIOLIN--Joachim, Paganini, Ole Bull, Maud Powell, Ysaye, Kreisler, and others. _By Henry T. Finck, Author and Music Critic._ THE MENTOR ASSOCIATION, INC. 52 EAST 19th STREET, NEW YORK, N.Y. THE MENTOR AS A REFERENCE LIBRARY Every Number of The Mentor is valuable. The back numbers are as useful and entertaining at any time as on the date of publication. Therefore, many members wish to own a complete file of back numbers. For those who own a complete set and desire to use The Mentor as a reference library, we have provided a simple and convenient method of filing and cataloguing The Mentor. In a booklet which we have especially provided for our members, the various Mentors are grouped under headings which link similar numbers together in sets. Attached to the name of each Mentor is a list of the gravure pictures accompanying it, together with a short synopsis of the contents. This gives immediate information as to what each Mentor contains. We will be glad to send this booklet free of charge. We also provide for our members file boxes the size of The Mentor. These are furnished stamped in gold lettering for forty cents apiece. In these The Mentors may be grouped according to sets. We also supply a binder which holds twelve or thirteen Mentors and has proved satisfactory in every way. This binder has been arranged so as to hold The Mentor complete, and it has tie-pins to which the pictures are attached, so that they swing freely in their place and the pictures can be enjoyed as well as the text on the back. The price of these binders is one dollar each. When our members desire to refer to a picture or look up a fact, it is only necessary for them to consult the booklet, finding there in which Mentor the information may be sought. The price of all back numbers of The Mentor is fifteen cents each. Write and let us explain the plan more fully. THE MENTOR ASSOCIATION, Inc. 52 East Nineteenth Street-New York City, N.Y. [Illustration: IN THE POSSESSION OF THE NEW YORK HISTORICAL SOCIETY COMMODORE STEPHEN DECATUR FROM THE PAINTING BY REMBRANDT PEALE] The War of 1812 STEPHEN DECATUR Monograph Number Three in The Mentor Reading Course The father of Stephen Decatur, also named Stephen, was a native of Newport, Rhode Island, and a captain in the United States navy. Stephen Decatur, Jr., was born at Sinnepuxent, Maryland, on January 5, 1779. He entered the American navy as a midshipman in 1798 on board the frigate _United States_. A year later he was promoted to lieutenant and in that rank saw a little service in the short war with France.