The following is a list of repositories and archives from which I can retrieve documents. If you do not see a repository listed, feel free to drop me an email with the name of the repository from which you need information, and I can tell you if I can access it.
National Archives and Records Administration (NARA) – Denver
Denver Public Libraries – 5th Floor – Department of Western History and Genealogy
Blair Caldwell African-American Research Library (Denver Public Library System)