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Welcome to ConSource

ConSource is a free online library of constitutional history. We digitize and cross-reference source documents written by individuals who drafted, ratified, and influenced the creation of the U.S. Constitution and its Amendments. We also run programs and host events that make use of constitutional sources.

Documents »

Start your research or browsing with first-hand records and correspondence.

Constitutional Index »

View summaries and resources by section, amendment, clause, and theme.

Lesson Plans »

Browse ConSource-created lesson plans and student resources.

Blog »

Read ConSource news along with staff and scholarly writings based on U.S. History and source documents.

From the Blog: Celebrate Constitution Day By Exploring the 1787 Constitutional Convention Debates

Tue, 16 Sep 2014

Over the last several months, ConSource has detailed on our Blog the key debates that occurred during the Constitutional Convention in Philadelphia from May 25, 1787 to September 17, 1787. We hope you will join us in re-exploring the Constitutional Convention debates in honor of Constitution Day on September 17!

Below you will find a list of all of the posts we wrote based on records of the Convention proceedings, which are freely available in the ConSource digital library.

The Rule of Secrecy

The Virginia Plan

Early Debate on the Legislature’s Apportionment and the Three-Fifths Clause 

The New Jersey ...

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Get Involved

ConSource maintains an official library and an open library. The official library contains collections and documents that have been approved by a board of academic advisors who specialize in U.S. history and constitutional themes. The open library contains collections and documents that are being considered or do not meet the standards of the academic advisory board.

As we build the next phase of ConSource.org, anyone will be able to participate in content creation and editing by signing up for a ConSource account. While the next phase of development is awaiting funding, you can still help improve and add to ConSource content.

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