Ernst Mayr Library
The mission of the Ernst Mayr Library is to preserve and provide information resources and services to support the research and teaching activities of the Harvard University community, especially the science community.
Library Tools & Services

- (617) 495-2475
This library’s extensive historical and contemporary collections support research and teaching in the Depts. of Organismic and Evolutionary Biology and Molecular &andCellular Biology. More than 300,000 printed & electronic books and journals are available to Harvard University affiliates and visitors.
Public Computer Terminals
Wi-Fi
Copiers
Microform Readers
This library’s extensive historical and contemporary collections support research and teaching in the Depts. of Organismic and Evolutionary Biology and Molecular &andCellular Biology. More than 300,000 printed & electronic books and journals are available to Harvard University affiliates and visitors.
Public Computer Terminals
Wi-Fi
Copiers
Microform Readers
This library’s extensive historical and contemporary collections support research and teaching in the Depts. of Organismic and Evolutionary Biology and Molecular &andCellular Biology. More than 300,000 printed & electronic books and journals are available to Harvard University affiliates and visitors.
Public Computer Terminals
Wi-Fi
Copiers
Microform Readers
This library’s extensive historical and contemporary collections support research and teaching in the Depts. of Organismic and Evolutionary Biology and Molecular &andCellular Biology. More than 300,000 printed & electronic books and journals are available to Harvard University affiliates and visitors.
Public Computer Terminals
Wi-Fi
Copiers
Microform Readers
Overview
The Library contains a vast collection of monographs and journals acquired since 1861 in many areas of natural history and zoology.
Archives
Archives include manuscripts, photographs, field notebooks, art work, specimen information, artifacts relating to MCZ Directors, Curators, staff and contributors.
- Interlibrary Loan, Scan & Deliver
- Reference and Research Assistance
| Library Professional | dbarr@oeb.harvard.edu |
| Head of Public Services in the Ernst Mayr Library | msears@oeb.harvard.edu |
| Special Collections Librarian in the Museum of Comparative Zoology Library | ryoung@oeb.harvard.edu |
- Circulation
Material from the general collection will be loaned to faculty, staff, and students of Harvard. Policies for borrowing vary depending on affiliation with Harvard. For more information on borrowing privileges, see the library’s official circulation policy or ask at the Reference Desk. An ID card is required for all circulation transactions.
- Access
Access is open to those with a Harvard ID, membership in the Museum (Friends of the HMNH), alumni of Harvard and Radcliffe, visiting researchers or students/faculty from other schools. The general public may use the library with permission. Books less than 100 years old circulate to anyone with a current Harvard ID. Periodicals circulate locally, with permission, to faculty, graduate students & staff.Standard borrowing time is 4 weeks for any Harvard ID holder. Renewals may be requested online in the Hollis Catalog, in person, or by telephone. Overdue notices are sent automatically by the Circulation system. Reserves circulate for 2 hours. Visitors to Special Collections are expected to sign in at each visit. Please call 495-2475 if you have questions.

Contact Information
About
Collections
Library Services
Library Staff
Visitor Policies