The collection consists of primary and secondary source material about the Ku Klux Klan, both in Oregon and in the United States overall, compiled by Roger Rasmussen. The bulk of this collection contains books, book excerpts, articles, theses, and newspaper clippings about the Ku Klux Klan, as well as anti-Catholicism and white supremacy in general; many of these materials are lightly annotated by Rasmussen. The collection also contains a biographical sketch of Rasmussen's grandfather Walter Lee Lansing, who belonged to Baker Klan No. 13, and research about Oregon individuals, particularly those who also belonged to Baker Klan No. 13. Original items pertaining to Baker Klan No. 13 include membership cards, correspondence, notices, stationery, manuals, a notice that Walter Lee Lansing and O. F. Coulter would be tried by the organization for unspecified offenses, and a 1931 letter from Klan leader William Joseph Simmons asking for support from former Klan members to help establish a new Klan-like organization.