Maryland Charities Database
Find summary information filed by charitable organizations with the Office of the Secretary of State of Maryland.
Research Resources
Mayo Clinic
Health information, the latest medical news, scientific breakthroughs, and patient stories.
MedlinePlus
Find information on health, wellness, disorders, and conditions. Learn about substance abuse, prescription drugs, over-the-counter medicines, herbs, and supplements.
Merck Manual of Diagnosis & Therapy
Find information on medical topics, symptoms, drugs, procedures, news, and more, written for the health care professional.
Merriam-Webster Dictionary & Thesaurus
Website for the Merriam-Webster Dictionary & Thesaurus. Look up definitions or find synonyms for a word.
Merriam-Webster Visual Dictionary
More than 20,000 terms alongside 6,000 images and illustrations arranged under 15 themes.
Middle School (Gale in Context)
General interest reference source with age-appropriate videos, newspapers, magazines, primary sources, and much more.
Music Scores
Free classical sheet music downloadable in PDF, Midi, and Scorch formats, searchable by composer or type of music.
MyMoney.gov
NADA Guides - Consumer Vehicle Values
Visit the consumer site to find the values, prices, tools, and information for new and used vehicles and manufactured homes.
NASA's Photojournal
Contains a wealth of photographs, diagrams, and animations related to our solar system. Maintained by the Jet Propulsion Laboratory at the California Institute of Technology.
National Archives Genealogy Page
The National Archives and Records Administration site provides links to information that will assist in using NARA records for genealogical research.
National Geographic Virtual Library
Articles from National Geographic magazine from its first issue in 1888 through 2015. Also includes a cross-searchable collection of National Geographic books, maps, images, and videos.
National Institute of Mental Health (NAMI)
Find information on disorders, clinical trials, statistics, support, and more related to mental health issues.
National Women's History Museum Biographies by Subject
Biographies of famous women in a variety of disciplines, compiled by the National Women's History Museum.
North American Industry Classification System (NAICS)
This official U.S. Government Web site provides the latest information on plans for NAICS revisions, as well as access to various NAICS reference files and tools.
NoveList K-8 Plus
Search for children's fiction and nonfiction titles by author, plot, read-alikes, curriculum, and more.
NoveList Plus
Search through a comprehensive collection of content from many of our Library Exclusive resources. Includes subject indexes and access to full-text articles from thousands of journals, magazines, and newspapers.