Letters addressed to William Oliver,
Letters addressed to William Oliver by John Ballinger, 1902, O. M. Edwards, 1902, E. Vincent Evans, 1903-1904, W. B. Gurdon, 1869, Henry Morley, 1887, Thomas Nelson and Sons, 1903, Alfred Nutt, 1901, Alfred Neobard Palmer, 1903, John Ruskin, 1868, T. F. Tout, and Josiah Thomas, Liverpool (the ownership of Y Tyst).
Part of Hobley Griffith Manuscripts,
Miscellaneous letters and papers from the collections of Humphrey Humphreys, W. J. Roberts ('Gwilym Cowlyd'), and William Hobley, including an account of the death of John Evans, Waunfawr; transcripts of letters by Goronwy Owen, 23 July 1767, 'True Briton', Old Fort Schuyler, 1800, and Rhisiart ab Tomas, Penepeck, 1800; letters by James McCosh, Belfast, 1861; J. H. Cotton to Owen Owens, Pentir, 1879; Josiah Thomas, Liverpool, 1898; John Jones ('Myrddin Fardd'); John H. Hobley, Chicago, 1892; and an incomplete letter of instruction for a maid.