| BOCES Putnam/Northern Westchester Library System & Union Catalog |
| Hendrick Hudson Free Library |
| The Internet Public Library |
| Library of Congress Home Page |
| Mid Hudson Library System |
| The National Science Digital Library |
| The New York Public Library Home Page |
| The New York Public Library Picture Collection |
| Brooklyn Public Library Home Page |
| Queens Borough Public Library Home Page |
| United Nations Dag Hammarskjold Library |
| U.S. National Library of Medicine (NLM) |
| Westchester Library System Catalog |
| Westchester Library System Home Page |
| World Cat |
