The Library of Congress serves as the de facto national library for the United States. As such, it is a repository of important historical collections of various media available to the public. While most people are aware that the Library of Congress is a free resource for citizens to use, they do not access due to the fact that it is located in Washington D.C. However, the Library of Congress has many online resources, including an entire repository of Digital Collections. Individuals can access maps, images, recordings, and more via the online digital repository. Librarians have also organized much of the material into various topical collections to help navigate through the content. Be sure to check out their Digital Collection here.