Notebooks, ledgers, manuscripts, books, scrapbooks, and correspondence. Includes daily research notebooks from 1936 to 1946, notebooks on specific subjects relating to Pennsylvania history, manuscripts of articles, books from 1814-1932, scrapbooks from 1906 to 1909, personal account ledger from 1897 to 1925, the Lancaster County Voting Register from 1911 to 1916, notes on law by Congressman Marriott Brosius, and miscellaneous correspondence from 1909 to 1945.