Open-air pastimes have always been popular with boys, and should always be encouraged. These books mingle adventure and fact, and will appeal to every manly boy.

12mo. Handsomely printed and illustrated.

THE PUTNAM HALL MYSTERY
Or The School Chums' Strange Discovery

The particulars of the mystery and the solution of it are very interesting reading.

THE PUTNAM HALL ENCAMPMENT
Or The Secret of the Old Mill

A story full of vim and vigor, telling what the cadets did during the summer encampment, including a visit to a mysterious old mill, said to be haunted. The book has a wealth of fun in it.

THE PUTNAM HALL REBELLION
Or The Rival Runaways

The boys had good reasons for running away during Captain Putnam's absence. They had plenty of fun, and several queer adventures.

THE PUTNAM HALL CHAMPIONS
Or Bound to Win Out

In this volume the Putnam Hall Cadets show what they can do in various keen rivalries on the athletic field and elsewhere. There is one victory which leads to a most unlooked-for discovery.