"Memorial of John Littlefield Tilton. "; "Reger, David B. (David Bright), 1882-1958."; "Tilton, John Littlefield, b. 1863."; "Reger, David B. (David Bright), 1882-1958."; "1931"; "Serial issue. Issued as: Bulletin of the Geological Society of America, v.42 (1931).
"; ""; "P5129"; "pec"; "Tilton, John Littlefield, b. 1863."; "14256"; .