Walliæ Curiosa. A Catalogue of ... Books ... on sale by W. J. Roberts, ... Llanrwst, 1881, with annotations by Egerton Phillimore; a catalogue of books to be sold at Cowlyd House, Llanrwst, 1897; and a fragment of a manuscript catalogue of books.
'The Llanrwst & District Gleaner',
A cyclostyled copy of a manuscript weekly news-sheet entitled 'The Llanrwst & District Gleaner', no. 9, 1 June, [18]95.
Amrywiaeth o gasgliad William John Roberts (Gwilym Cowlyd)
A file entitled 'Amryw o Gasgliad Gwilym Cowlyd'. It includes lists of books received by W[illiam] J[ohn] Roberts ['Gwilym Cowlyd']; draft correspondence; notes; a transcript of the programme of the 1903 prayer week at Llanrwst; a collecting book for the Jubilee Celebrations at Llanrwst, 1887; a catalogue of a sale of books and manuscripts, etc. at Cowlyd House, Llanrwst, 1897; a copy of an agreement for the lease of a printing press to John Lloyd Roberts, Llanddoged, 1891; and a poster of 'The Institutional Gorsedd ... and Bardic Anniversary' held on the banks of Llyn Geirionydd, 1899.
Gwilym Cowlyd, 1828-1904