Special and School Libraries
- Lawrence Livermore National Laboratory Library
Livermore, California, USA
- Lewiston High School Library
Lewiston, Maine, USA
- Litchfield Historical Society
Litchfield, Connecticut, USA
- Los Alamos National Laboratory
Los Alamos, New Mexico, USA
- LuEsther T. Mertz Library
Bronx, New York, USA
- Lunar and Planetary Institute
Houston, Texas, USA
- Madison Meadows Middle School Library Media Center
Phoenix, Arizona, USA
- Mahomet-Seymour High School Library
Mahomet, Illinois, USA
- Maine South High School
Park Ridge, Illinois, USA
- Maneuver Center of Excellence Libraries
Fort Benning, Georgia, USA
- Maricopa County Superior Court Law Library
Phoenix, Arizona, USA
- Marine Biological Laboratory
Woods Hole, Massachusetts, USA
- Martha's Vineyard Regional High School Library
Oak Bluffs, Massachusetts, USA
- Mechanics' Institute Library
San Francisco,, California, USA
- Metropolitan Transportation Commission Library
Oakland, California, USA
- Michigan Center Jr/Sr High School Library
Michigan Center,, Michigan, USA
- Midwest Historical & Genealogical Society
Wichita, Utah, USA
- Minnesota Historical Society
Saint Paul, Minnesota, USA