POPULAR OFFICIAL GUIDE 
TO THE 
New York Zoological Park 
By WILLIAM T. HORNADAY, Sc.D. 
Director and General Curator 
ILLUSTRATED BY ELWIN R. SANBORN 
WITH MAPS, PLANS AND ILLUSTRATIONS 
ELEVENTH EDITION—JUNE |, 1911 
PUBLISHED BY THE 
NEW YORK ZOOLOGICAL SOCIETY 
11 WALL STREET, NEW YORK 
