Papers relating to Addison's family, 1895-1934, (fols. 3-10) letters written by Isobel Addison to her parents while on her honeymoon, 1902; b (fols. 11-37) letters from Isobel Addison to Addison, 1930-1934; (fols. 38-139) letters from Addison to his family, 1909-1933, and (fols. 140-249) book of quotations, 1895, essays, and poetry, n.d., belonging to Isobel Addison.