The Jameson, M. mss., 1875-1931, consists primarily of letters to author Booth Tarkington, 1869-1946, or to his sister, Mary "Haute" Booth (Tarkington) Jameson, 1881-1937, writer, suffragist, and clubwoman.
The Riley mss. III, 1876-1917, consist of correspondence and writings of James Whitcomb Riley, 1849-1916, poet from Greenfield, Indiana, who lived on Lockerbie Street in Indianapolis during his adult life.
The Riley mss. V, 1876-1917, consist of the correspondence and writings of James Whitcomb Riley, 1849-1916, poet, born in Greenfield, Indiana. He later lived on Lockerbie Street in Indianapolis, Indiana.
The Bottsford mss., 1877-1885, consists chiefly of letters from poet James Whitcomb Riley, 1849-1916, to fellow poet Clara Louise Bottsford, 1852-1910.
The Brunn mss., 1879-1921, are the letters and poems of James Whitcomb Riley, 1849-1916, poet, sent to Elizabeth D. Kahle, 1861?-?, of New Brighton, Pennsylvania.
The Hitt mss., 1891-1938, consists primarily of letters from poet James Whitcomb Riley, 1849-1916, to journalist George Cooper Hitt, 1851-1944. George C. Hitt & Co. published Riley's first book, The Old Swimmin'-hole and'Leven More Poems, in 1883.
The Evans, W.E. mss., 1892-1900, consists of letters, writings, and sketches of James Whitcomb Riley, 1849-1916, poet, collected by Walter E. Evans, an employee of The Bowen- Merrill Company of Indianapolis, Indiana.
The Holstein mss., 1892-1916, consist of personal letters from James Whitcomb Riley, 1849-1916, poet, to Charles Louis Holstein, 1843-1901, lawyer, and Mrs. Magdalena (Nickum) Holstein, 1845-1916. Riley lived with the Holsteins at 528 Lockerbie Street, Indianapolis, Indiana for 23 years.