Letters addressed to Pedr Hir from various correspondents, including Edward Anwyl, Rev. Ellis Thomas Davies, J. Spinther James, John Morris Jones, D. Conway Jones, T. Gwynn Jones. The subjects covered are, the publications of Pedr Hir, his Eisteddfod success, his ministerial work and the activities of his friends and family. There is a testimonial, 1868, from John Griffith and a letter calling for Pedr Hir to accept an offer from a Baptist Church in Bootle to become their minister, 1897.
Other manuscripts include letters addressed to Watcyn Uther Williams from various correspondents; a diary consisting of an autobiography, once owned by Rev. Evan Jones, Ruthin; a description of a sermon held in memory of Christmas Evans; memorial poems to Isaac Ellis (Caerennydd) by Benjamin Davies, Rhuthun; and a letter from Theodore Ellison of Attica, New York to a John Jones, 1883.