1916.
1916.
1961.
1961.
20 Ganrif.
20 Ganrif.
'A Catalogue of books in Bob Owen's library on June 30, 1918'.
'A Catalogue of books in Bob Owen's library on June 30, 1918'.
'A Copy of a letter sent by Bob Owen to Mrs Robb of Virginia re her ancestors, Daniel Roberts ....
'A Copy of a letter sent by Bob Owen to Mrs Robb of Virginia re her ancestors, Daniel Roberts ....
'A Farewell Sermon' (1692) - wynebddalen yn unig; Detholiad ynglyn ag ysgolion Cymraeg o An Account of Charity schools lately ....
'A Farewell Sermon' (1692) - wynebddalen yn unig; Detholiad ynglyn ag ysgolion Cymraeg o An Account of Charity schools lately ....
'A List of Caernarvonshire manuscripts and records', 1936.
'A List of Caernarvonshire manuscripts and records', 1936.
'A List of manuscripts and documents relating to the slate industry', 1939.
'A List of manuscripts and documents relating to the slate industry', 1939.
'A list of purchases from the library of Mr Bob Owen, OBE, MA, 1959, by NLW'.
'A list of purchases from the library of Mr Bob Owen, OBE, MA, 1959, by NLW'.
'A list of Welsh Books received on approval from Mr Bob Owen, Aelybryn, Croesor, July 1959'.
'A list of Welsh Books received on approval from Mr Bob Owen, Aelybryn, Croesor, July 1959'.
'A Short narrative of the proceedings against the Bishop of St Asaph, 1702'.
'A Short narrative of the proceedings against the Bishop of St Asaph, 1702'.
Abel Morgan (1673-1722), gweinidog gyda'r Bedyddwyr; Crynwyr, &c.
Abel Morgan (1673-1722), gweinidog gyda'r Bedyddwyr; Crynwyr, &c.
Aberdaron, 18-19g., galwedigaethau, hirhoedledd.
Aberdaron, 18-19g., galwedigaethau, hirhoedledd.
Aberffraw, Môn, 17-18g., tair priodas; Eglwys Fach [Dinb.?], 1725-40, tair priodas, nodiadau.
Aberffraw, Môn, 17-18g., tair priodas; Eglwys Fach [Dinb.?], 1725-40, tair priodas, nodiadau.
Aberffraw, Môn, 1720-1831.
Aberffraw, Môn, 1720-1831.
'Abstracts from Glynllifon Papers, National Library, Vol. 1' (1938).
'Abstracts from Glynllifon Papers, National Library, Vol. 1' (1938).
'Account of Theatres in Wales from 1804 to 1824'.
'Account of Theatres in Wales from 1804 to 1824'.
Ach Owain Myfyr [Owen Jones] a luniwyd ar gyfer [?J.E.] Cecil-Williams ac R. T. Jenkins.
Ach Owain Myfyr [Owen Jones] a luniwyd ar gyfer [?J.E.] Cecil-Williams ac R. T. Jenkins.
Achau Bob Owen.
Achau Bob Owen.
Achau teuluoedd sir Feirionnydd.
Achau teuluoedd sir Feirionnydd.
