Papers consist of general correspondence (1906-1923), primarily reflecting his business and public service activities, though there are also some letters dealing with Meloy's personal life; and miscellaneous correspondence (1927). The collection also contains court papers (1916); financial records (1892-1923, undated) of his personal and business interests; legal documents (1897-1922); subject files (1906-1923); and miscellany (1903-1922, undated).

Records of the Grayson Creek Ranch Company include a three journals (1915-1921, 1946-1946), two general ledgers (1910-1912, 1936-1946), miscellaneous financial items, a report on Missouri Valley water resources, cattle and pig records (1903-1921), and a weather log (1936-1947).