Skip to Main Content
It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.

Browse Open Access Databases: N

  • A New Nation Votes
    "A New Nation Votes is a searchable collection of election returns from the earliest years of American democracy. The data were compiled by Philip Lampi. The American Antiquarian Society and Tufts University Digital Collections and Archives have mounted it online for you with funding from the National Endowment for the Humanities."
  • NASA Technical Reports Server
    "Over 500,000 aerospace-related citations, over 200,000 full-text online documents, and over 500,000 images and videos are available in the three collections that are integrated in NTRS"
  • National Center for Health Statistics
    Source of statistical information to guide health-related actions and policies in the United States.
  • National Conference of State Legislatures
    Provides research
  • National Criminal Justice Reference Service (NCJRS)
    "Established in 1972, the National Criminal Justice Reference Service (NCJRS) is a federally funded resource offering justice and drug-related information to support research, policy, and program development worldwide."
  • National Endowment for the Arts Publications
    All documents are in PDF format.
  • National Fire Department Registry
    The National Fire Department Registry provides an address listing of U.S. fire departments registered with the U.S. Fire Administration (USFA) as well as some basic information about each fire department.
  • National Gallery of Art Images
    "NGA Images is a repository of digital images of the collections of the National Gallery of Art. On this website you can search, browse, share, and download images. A standards-based reproduction guide and a help section provide advice for both novices and experts. More than 45,000 open access digital images up to 4000 pixels each are available free of charge for download and use. NGA Images is designed to facilitate learning, enrichment, enjoyment, and exploration. "
  • National Gallery of Art Images
    "NGA Images is a repository of digital images of the collections of the National Gallery of Art. On this website you can search, browse, share, and download images. A standards-based reproduction guide and a help section provide advice for both novices and experts. More than 45,000 open access digital images up to 4000 pixels each are available free of charge for download and use."
  • National Geographic Map Machine
    A good variety of interactive maps.
  • National Geothermal Data System [NGDS]
    "The National Geothermal Data System is a catalog of documents and datasets that provide information about geothermal resources." (LOADB)
  • National Jukebox
    "Historic recordings from the Library of Congress ... makes historical sound recordings available to the public free of charge. The Jukebox includes recordings from the extraordinary collections of the Library of Congress Packard Campus for Audio Visual Conservation and other contributing libraries and archives."
  • National Science Digital Library
    "The National Science Digital Library provides high quality online educational resources for teaching and learning, with current emphasis on the sciences, technology, engineering, and mathematics (STEM) disciplines
  • Nature Precedings
    "Nature Precedings was launched in 2007 as NPG�s preprint server for the Life Science community. Since 2007, technological advances and the needs of the research community have evolved to the extent that the Nature Precedings site is unsustainable as it was originally conceived. As a result, Nature Precedings ceased accepting new submissions as of April 3rd, 2012. The full archive of existing content remains freely accessible at this site and will be maintained by NPG"
  • NCBI Bookshelf
    "Bookshelf provides free online access to books and documents in life science and healthcare. Search, read, and discover."
  • NCLEX-RN Practice Exerciss
    86 exercises free from Khan Academy
  • New York Public Library | The Picture Collection
    " The Picture Collection For those who seek knowledge and inspiration from visual materials, the Picture Collection Online presents more than 30,000 digitized images from books, magazines and newspapers as well as original photographs, prints and postcards, mostly created before 1923"
  • News and Research from the National Fire Protection Association
    "To keep you in the know, NFPA produces dozens of reports every year on the overall fire problem, firefighter fatalities and injuries, major fire causes, fire protection systems, and many other topics. We also work with organizations around the world to investigate new technologies and document the performance of fire- and building-related products." Not all resources are open access
  • NIST/ARPA-E Database of Novel and Emerging Adsorbent Materials
    "This database is about the novel and emerging adsorbent materials.." -- LOADB
  • Nolo's Free Dictionary Of Law Terms and Legal Definitions
    "Find plain-English definitions for legal terms by browsing Nolo's Plain-English Law Dictionary."
  • North American Industry Classification System (NAICS)
    The North American Industry Classification System (NAICS) is the standard used by Federal statistical agencies in classifying business establishments for the purpose of collecting, analyzing, and publishing statistical data related to the U.S. business economy.
  • Notated Music
    Access over 97,000 items available online via the Library of Congress.
  • Nursing Commons
    Over 12,000 full-text, open access articles.

©2020 Houston Community College Libraries