Research -- Data Collection

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Public Library Survey (PLS)
The Public Library Survey (PLS) provides national descriptive data on the status of public libraries in the United States & its territories. Data are collected from over 9,000 public library systems with over 17,000 public library outlets. Read more.

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State Library Agency Survey (SLAA)
The State Library Agency Survey (SLAA) provides descriptive data about state library agencies for all fifty states and the District of Columbia. Read more.

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Public Needs for Library and Museum Services Survey (PNLMS)
The Public Needs for Library and Museum Services Survey (PNLMS) is a household survey designed to monitor the expectations of and satisfaction with library and museum services. The purpose of this collection is to determine attitudes, to assess awareness of issues related to library and museum services, and to track trends in visitation and usage. Read more.

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Museums Count
Museums Count is a national web based census of all museums in the United States and its territories. The purpose of Museums Count is to establish comprehensive, reliable data about the size, distribution and scope of the museum sector in the United States. Read more.

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Museum Universe Data File (MUDF)
The Museum Universe Data File (MUDF) contains information about known museums in the United States using data collected and aggregated from a variety of sources including IMLS administrative data and records, IRS 990 data, Dun & Bradstreet data, and from other Internet listings of museums. Included in this file are the names and addresses of over 35,000 museums in the United States including aquariums, arboretums, botanical gardens, art museums, children’s museums, general museums, historic houses and sites, history museums, nature centers, natural history and anthropology museums, planetariums, science and technology centers, specialized museums, and zoological parks. Read more.

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Administrative Discretionary Grant Data
Administrative Discretionary Grant Data file contains administrative records of discretionary grant recipients who were awarded funds by the Institute of Museum and Library Services from fiscal year 1996 through fiscal year 2013. Read more