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Historical primary sources online: Aggregate data

Multipart guide to VT Libraries' many digital archives, whether based on types of sources or thematic collections.

Aggregate data sources can be data-discovery tools

Some sources of aggregate data provide only tables and source information, leaving the original microdata out of sight.  Online, it is common for tables to be exportable in CSV or other delimited formats so they can be combined in new tables or maps; it's sometimes possible to combine or query variables directly online.  Larger providers permit bulk downloading of their data via application programming interfaces (APIs).   For repositories of microdata, see the research datasets tab.

This guide is divided into sources principally devoted to the US data (including Virginia) and to international and transnational data that may include US data as well.

US data presented in tables

International and transnational aggregate data

Find statistical agencies

Find data by subject

Cite the data you use