If you are researching the Continental Congress, there are a number of great electronic resources for accessing its materials, some of which are freely available online.
Journals of the Continental Congress
The Journals of the Continental Congress are on HeinOnline and are also available for free on the Library of Congress website A Century of Lawmaking for a New Nation: U.S. Congressional Documents and Debates.
Letters of Delegates to Congress
The Letters of Delegates to Congress are also on HeinOnline and A Century of Lawmaking for a New Nation.
Papers of the Continental Congress
The Papers of the Continental Congress, 1774-1789, are currently available for free online from Fold3.
The Papers on this site are a digitized version of the microfilm collection (M247) created by the National Archives and Records Administration. For an overview of this collection, see this guide from the National Archives and Records Administration.
You can browse these Papers or search by keyword on Fold3. It can be also very helpful to utilize the Index: Papers of the Continental Congress, 1774-1789, available on HeinOnline, when searching the Papers on Fold3. The collection is large, and the Index will help you more quickly identify relevant Papers contained therein. Additionally, since Fold3 provides information on where each document is published in the microfilm collection, you can use the Index to find roll, item, and page numbers and search the Papers on Fold3 using these document identifiers. Note: It often, but does not always, work to search the Papers on Fold3 using the document identifiers. If you are not finding a document using the identifiers from the Index, try searching by keyword or subject (from the Index) instead.
Finally, Fold3 also provides access to the collection of Miscellaneous Papers of the Continental Congress (NARA Microfilm Publication M332).
If you need assistance with any of these resources or have other questions about researching the Continental Congress, contact a librarian at the Reference Desk.