Have fun! Popular official guide to the New York Zoological Park / Or, if you prefer early Annual Reports: http://biodiversityheritagelibrary.org/bibliography/12311
Thank you for posting this link, it is absolutely the most fascinating document I have ever seen posted on the site!
My pleasure I also added links for other historical stuff in the Philadelphia Zoo thread, the London Zoo thread, the Paris Jardin des Plantes thread, Franklin Park Zoo (Boston) and the General Zoo thread (Hagenbeck's autobiography)