Don Carlos Ellis – författare

First Exposition of Conservation and Its Builders; an Official History of the National Conservation Exposition, Held at Knoxville, Tenn., in 1913 and of Its Forerunners, the Appalachian Expositions of 1910-11, Embracing a Review of the Conservation...

First Exposition of Conservation and Its Builders; an Official History of the National Conservation Exposition, Held at Knoxville, Tenn., in 1913 and of Its Forerunners, the Appalachian Expositions of 1910-11, Embracing a Review of the Conservation...

Motion Pictures in Education

A Practical Handbook for Users of Visual Aids

Motion Pictures in Education

A Practical Handbook for Users of Visual Aids