The Library of Congress has numerous other research guides related to the U.S. Constitution and its interpretation.
Research guides related to the history of the drafting and founding of the Constitution.
Research guides related to the history and interpretation of constitutional amendments.
Research guides related to the basics of the legal research underpinning the Constitution Annotated.
Research guides related to constitutional debate across the three branches of government.
Research guides related to the U.S. Federal Judiciary, where most questions on the Constitution are debated and decided.