Harper's Electricity Book for Boys

by Joseph H. Adams

HARPER’S OUTDOOR BOOK FOR BOYS

By Joseph H. Adams. With Additional Contributions by Kirk Munroe, Tappan Adney, Capt. Howard Patterson, L. M. Yale, and others. Cloth, $1.75.

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HARPER’S ELECTRICITY BOOK FOR BOYS

Written and Illustrated by Joseph H. Adams. With a Dictionary of Electrical Terms. Cloth, $1.75.

IN PRESS

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HARPER’S HOW TO UNDERSTAND ELECTRICAL WORK

A Simple Explanation of Electric Light, Heat, Power, and Traction in Daily Life. By Joseph B. Baker, Technical Editor, U. S. Geological Survey, formerly of the General Electric Company.

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