A B C of television; or, Seeing by radio; a complete and comprehensive treatise dealing with the theory, construction and operation of telephotographic and television transmitters and receivers; written especially for home experimenters, radio fans and students.. (1929)

CATALOGUE OF GOOD, PRACTICAL BOOKS EVERYBODY'S AVIATION GUIDE. By VICTOR W. PAG£. A Popular Book at a Popular Price. This book, written in the form of a series of lessons or instructions, starts the reader at the beginning of the subject, outlines the elementary aerodynamical rules for the various forms of flying machines, describes typical conventional and unconventional forms of heavier-than-air and lighter-than-air craft, the functions of the various parts of an airplane, and covers briefly the various types of airplane power plants in both air and water-cooled forms. It outlines fully all types of land and sea flying machines, their control systems and the methods of flying. These are all fully illustrated. While piloting an airplane can be learned only by actual practice, this book will give the reader the various steps in airplane control and will serve as a very valuable intro duction to the entire subject of flying for the non-technical person who wishes to be able to fly an airplane just as he now operates an automobile for business or pleasure. 247 pages, 140 illustrations, 600 questions and answers on aviation. Price. $2.00 AVIATION BOOKS AT SPECIAL PRICES As very large editions of books below were printed when published, and in order to reduce our stock we are offering these books at reduced prices. Although these books were published a few years ago, they contain much information of value at the present time, and in order that those interested in aviation may avail themselves of these volumes we are now offering them at reduced prices to clear out the editions. The principles of operation described in these books apply just as well to the latest types of airplanes and airships and their engines which have changed only in minor details from the forms illustrated, and they are just as valuable to the reader today. The beginner or student will get much information at low cost from the following books. A B C OF AVIATION. By MAJOR VICTOR W. PAGE. This book describes the basic principles of aviation, tells how a balloon or dirigible is made and why it floats in the air. Describes how an airplane flies. It shows in detail the different parts of an airplane, what they are and what they do. Describes all types of airplanes and how they differ in construction; as well as detailing the advantages and disadvantages of different types of aircraft. It includes a complete dictionary of aviation terms and clear drawings of leading airplanes. The reader will find simple instructions for unpacking, setting up, and rigging airplanes. A full description of airplane control principles is given and methods of flying are dis cussed at length. This book answers every question one can ask about modern aircraft, then* con struction and operation. A self-educator on aviation without an equal. 274 pages. 130 specially made illustrations with 7 plates. Price $1.25 AVIATION ENGINES—DESIGN; CONSTRUCTION; REPAIR. By MAJOR VICTOR W. PAGE, A.S., S.C.U.S.R. This treatise, written by a recognized authority on all of the practical aspects or internal combustion engine construction, maintenance, and repair, fills the need as no other book does. The matter is logically arranged; all descriptive matter is simply expressed and copiously illustrated, so that anyone can understand airplane engine operation and repair even if without previous mechanical training. This work is invaluable for anyone desiring to become an aviator or aviation mechanic. Rotary types, such as the Gnome Monosoupape, and LeRhone, are fully explained, as well as the Vee and radial types. The subjects of carburetion, ignition, cooling, and lubrication also are covered in a thorough manner. The chapters on repair and maintenance are distinctive and found in no other book on this subject. Not a technical book, but a practical, easily understood work of reference for all interested in aeronautical science. 589 pages. 253 illustrations. Price, net . . . $1.25 8