[Letter from John O'Donovan (36 Buckingham Street, Dublin) to William Reeves, concerning Count Charles MacDonnell's letter.]

[Letter from John O'Donovan (36 Buckingham Street, Dublin) to William Reeves, discussing different Irish manuscripts.]

[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 J. Donnavanides [John O'Donovan] (36 Buckingham Street, Dublin) to William Reeves, concerning the young linguist Whitley Stokes.]

[Letter from John O'Donovan (36 Buckingham Street, Dublin) to William Reeves, discussing their work.]

[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 from John O'Donovan (8 Newcomen Place, North Strand, Dublin) to William Reeves, discussing extracts from Irish manuscripts.]

[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, seeking advice on producing a subject index for his book.]

[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.]