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

[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.]

[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.]

[Letter from John O'Donovan (8 Newcomen Place, North Strand, Dublin) to William Reeves, discussing recent criticisms of their work on Irish place names.]