Mary Sarah Bilder's BC Portal

America: History and Life
America's Historical Newspapers, 1690-1876, including Early American Newspapers, Series 1 American Historical Newspapers offer fully searchable, cover-to-cover reproductions of more than one million pages from more than 650 historical American newspapers, focusing on titles published in the 18th century. Archive of Americana This is the link to the umbrella database of Archive of Americana. Some of the information here overlaps with information available on the American Memory Project.
Archive of Americana: America's Historical Newspapers (1690-1922) You can search through newspapers, even by city. Philadelphia has 62 newspapers listed, with many's coverage dating back to even before the time of the Constitutional Convention.
Boston College University Libraries: HISTORY Online Databases

Eighteenth Century Collections Online
Eighteenth Century Journals
Hein Online

JSTOR
Lexis Nexis
Making of Modern Law Includes Madison's Journal of the Convention in addition to other English and American treatises, published between 1800 and 1926, with pdf images.
Justis

Congressional Record (1873-current)
Congressional Globe (1833-1873) "The contents of the appendix of each volume vary from Congress to Congress, but appendixes typically contain presidential messages, reports of the heads of departments and cabinet officers, texts of laws, and appropriations." Register of Debates (1824-1837) Annals of Congress (1789-1824)

National Archives and Records Administration: Historical Documents Collection This website provides downloadable, high-resolution images of America's many historical documents, along with transcripts of the text that appears on these documents.
Online Liberty Library Includes, among other things, the Works of Thomas Jefferson, a 12 volume set. Volumes 1 and 2 are from the time period before, and during the Constitutional Convention.
Our Documents.Gov: 100 Milestone Documents collection This website includes images of the documents that can be "rolled" over. Also included are transcripts of the text on each of these documents: .
Small Town Newspapers Newspapers date back to 1865 on this website and can be viewed through their original images.
The Open Library
Yale Avalon Project - 18th Century Documents
Yale Avalon Project - Roots of the Constitution

Federalist Papers (in numerical order) This website allows you to work with frames or without frames.
Pamphlets on the Constitution of the United States, published during its Discussion by the People, 1787-1788 [1787] (Online Liberty Library) Pamphlets available written by the following: Elbridge Gerry, Noah Webster, John Jay, Melancthon Smith, Pelatiah Werster, Tench Coxe, James Wilson, John Dickinson, Alexander Contee Hanson, Edmund Randolph, Richard Henry Lee, George mason, and David Ramsay.

Donald S. Lutz, Colonial Origins of the American Constitution: A Documentary History [1998] "A collection of eighty documents which demonstrate how local government in colonial America was the seedbed of American constitutionalism."
Our Founders' Constitution (by Philip Kurland and Ralph Lerner) - free web version This is through the University of Chicago Press and the Liberty Fund.

Colleen A. Sheehan, Friends of the Constitution: Writings of the “Other” Federalists, 1787-1788 [1998] "Included are the original texts of pamphlets, speeches, and other pro-ratification writings of George Washington, Benjamin Rush, Nicholas Collin, John Dickinson, James Wilson, Tench Coxe, Benjamin Franklin, Noah Webster, Roger Sherman, Fisher Ames, Peletiah Webster, Samuel Tenny, Stephen Hopkins, Oliver Ellsworth, and David Ramsay. Separately they address the underlying themes of the historic Federalist-Anti-Federalist debate: “The Necessity of Union,” “Energetic but Limited Government,” and “Popular Government and Civic Virtue.” History of the Life and Times of James Madison, by William Cabell Rives (volume 2) Volume 2 of this three volume work is available through Google Books. This is a digitized version of Harvard's print copy.
Rives, History of the Life and Times of James Madison, volume 1 Please note that this is a limited preview of volume 1, even if you are looking at it through Firefox, with the LibX tool installed.