Correspondence between John O'Donovan (1809-1861), and, principally, William Reeves (1815-1892): eighty letters (1832-1860) and twenty-six undated note fragments.

[List of queries in William Reeves's hand, answered by John O'Donovan.]

[Letter from John O'Donovan to William Reeves, discussing the problematic printing of the Annals.]

[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 the locality of Castle Drumtarsy.]

[Letter from John O'Donovan (8 Newcomen Place, North Strand, Dublin) to William Reeves (11 Panton Square, Haymarket, London), discussing the state of Irish manuscripts in a number of British archives and their interpretation to date.]