Materials consist of a photograph of Cleveland Rockwell and Cornelia F. Rockwell's two daughters, circa 1898; an original 1949 letter written by their younger daughter, Cornelia Rockwell Kearney; and handwritten notes with biographical information about Cleveland Rockwell and his family, including information from 1863 and 1864 U.S. Coast Survey reports, and from obituaries for Rockwell in the Oregonian newspaper on March 22 and March 23, 1907.