VOLUME I

Thinking and Learning to Think

By Nathan C. Schaeffer, Ph.D., LL.D., Superintendent of Public Instruction for the State of Pennsylvania. 351 pages. Cloth, $1.25.

VOLUME II

Two Centuries of Pennsylvania History

By Isaac Sharpless, President of Haverford College. 385 pages. Illustrated. Cloth, $1.25.

VOLUME III

Kemp’s History of Education

By Dr. E. L. Kemp, Principal of East Stroudsburg Normal School. 385 pages. Cloth, $1.25.

VOLUME IV