1929, First Edition, Second Impression; McGraw-Hill Book Company publishers; hardbound; good condition with minor tanning of pages; original owner's name inside front (cursive, pencil)
 
from Preface:
In this book the essential principles undrlying the operation of vacuum tubes are explained in a manner calculated to present a well defined picture to students and general readers.  The vacuum tube possesses a remarkable variety of functions and, accordingly, this book includes, in addition to the use of two- and three-element vacuum tubes for radio reception and transmission, other applications that re of considerable practical significance...