{"value"=>"<p>The <em>Personal Papers series, 1912-1981</em> is composed primarily of letters Porter wrote to his family while a graduate student at Harvard University, 1927-1934. These are long, detailed letters providing much information on the process of obtaining his doctoral degree in business history. Other letters were written by his wife, Annette, and his two brothers, Keith and Russell. Some material relates to teaching at the University of Oregon.</p>"}