Contains the biographies and family history of William H. Peterson, Hartin Peterson, Martha Johnson Peterson, Robert Hanley, and Genevieve Kotula Hanley. Also official documents like birth and death certificates, Hartin Peterson's World War I papers, and World War II material like ration books, car registrations, and the service flag Martha Peterson made for William. Additional material includes William H. Peterson's schoolwork, Hartin Peterson's secret society documents, newspaper clippings about Peterson family members and the Pullman Company, and pictorial books from Chicago's 1893 and 1934 world's fairs.