[Letter from John O'Donovan (8 Newcomen Place, North Strand, Dublin) to William Reeves (Parsonage, Ballymena, Co. Antrim), returning answers to Reeves's queries and reporting on his own work on the Annals of the Four Masters.]
[Letter from John O'Donovan to William Reeves (Parsonage, Ballymena, Co. Antrim), describing his work on the Annals and commenting in passing on the Coercion Bill.]
[Letter from John O'Donovan (8 Newcomen Place, North Strand, Dublin) to William Reeves, returning answers to some queries and discussing work on the Annals.]
[Letter and note from John O'Donovan (8 Newcomen Place, North Strand, Dublin) to William Reeves (Ballymena, Co. Antrim), discussing the O'Neill and O'Donnell genealogies.]
[Letter from John O'Donovan (8 Newcomen Place, North Strand, Dublin) to William Reeves (Parsonage House, Ballymena, Co. Antrim), discussing his work and his impending move to Belfast.]
[Letters from John O'Donovan, Dublin to William Reeves (Diocesan School, Ballymena, Co. Antrim), discussing his and O'Curry's transcription of the Brehon Laws.]
[Letter from John O'Donovan (8 Newcomen Place, North Strand, Dublin) to William Reeves (Parsonage House, Ballymena, Co. Antrim), concerning his work, health and his desire to emigrate to America.]
[Letter from John O'Donovan (8 Newcomen Place, North Strand, Dublin) to William Reeves, discussing building projects of the Gaelic aristocracy in Ulster.]
[Letter from John O'Donovan (36 Buckingham Street, Dublin) to William Reeves, discussing some copy-editing matters, and pointing out the forgeries of Shane O'Dugan's time.]
[Letter from William Reeves (Ballymena, Co. Antrim) to John O'Donovan, concerning the translation of some extracts from the Annals of Ulster; includes O'Donovan's response.]
[Letter from John O'Donovan (8 Newcomen Place, North Strand, Dublin) to William Reeves, discussing recent criticisms of their work on Irish place names.]
[Letter from Joannen Donovaniden [John O'Donovan] (Ulster Railway Hotel, Belfast, Co. Antrim), to William Reeves (The Vicarage, Lusk, Co. Dublin), discussing the Dinnsenchus of Armagh.]