Books Mean Success 



You can't get on in the world unless you read 

 — read the books which will make you more valu- 

 able to those for whom you work. You don't 

 have to go to college. Edison never went to col- 

 lege. But he has probably the finest library of 

 technical books in this country. 



If you want helpful, practical books on elec- 

 tricity, mechanics, mechanical engineering, wire- 

 less, aeroplanes, sheet metal work, repairing, write 

 to the Popular Science ^lonthly's Readers' Ser- 

 vice Bureau. Tell us in what subjects you are 

 interested and we will compile a list of books, 

 with their prices. 



We will send more than a mere price list. We 

 will select out of a hundred or more titles the 

 very book which, in our opinion, meets your 

 requirements. 



Whenever you are at a loss for an inexpensive, 

 practical book, or for information about books, 

 write to 



Popular Science Monthly's 

 Readers* Service Bureau 

 239 Fourth Avenue, New York 



