Ó Riada sa Gaiety / Liam Miller, designer

O'Carolan Harp Festival, Nobber, Co. Meath, 1992 / [unidentified photographer]

O’Connell centenary celebration in Dublin, 1875 / [unidentified artist]

O’Connell centenary celebration in Dublin, 1875 / [unidentified artist]

O’Connell centenary celebration in Dublin, 1875 / [unidentified artist]

O’Donnell aboo!, cover

O’Farrell, pipes / unidentified artist

O’Neill’s jig / William O’Duane

Ochanee, cover

Odds and ends song book, cover

Oh Bay of Dublin, cover

Oh! Molly Bawn / unidentified artist

Oisin Mac Diarmada / Orla Henihan

Oisín MacMahon, grandson of Tony Mac Mahon [digital image] / Colm Keating

Oisín MacMahon, son of Tony Mac Mahon [digital image] / Colm Keating

Oisín McAuley, fiddle / Steven de Paoire

Old and new song book, cover

Old come all ye’s : the finest collection of northern ballads and folk poems (2nd enlarged...

Old come all ye’s (4th ed.), cover

Old Dublin songs, cover

Old English sword dance / unidentified artist

Old Irish croonauns and other tunes, cover

Old Irish Folk Music and Songs: The Joyce Collection Part I, cover

Oliver Farrelly, accordion / Steven de Paoire