Contains a black notebook consisting primarily of seventeenth-century bardic poems copied by J.J. O'Kelly. Includes a number of Munster poets such as Dáibhí Ó Bruadair and Piaras Feiritéar.

Contains a top-bound notebook primarily concerning seventeenth-century Ireland.

Contains a notebook dealing with a variety of subjects including banking, the saints and their patronage, the annals of the four masters, Louvain, Luke Wadding, "Our Saints and Sages," and Charles I.

Contains an incomplete set of loose-leaf notes concerning the Irish colleges on the European continent in the seventeenth century.

Contains a notebook and 12 loose leaves of paper detailing the linen, wool, cotton and silk industries in Ireland from the fifteenth century to the ninteenth century. Most of the notes are primarily concerned with the eighteenth century linen trade.

Contains a black, lined notebook accompanied by a single envelope embossed with "Devonshire Arms Hotel, Dungarvan. Co. Waterford." on the front and "Dunne Bros. Proprietors." on the back. The notebook contains a list of priests within the intial pages, then a draft of an essay concerning the events between the creation of Grattan's Parliament in 1782 and the 1798 Rising follows. The envelope was originally enclosed within the notebook between ff. 77-78.

Contains a collection of loose-leaf notes in typescript concerning numerous aspects of the Irish economy including ship-building, the linen trade, the woollen industrry, mining, the military, and taxation from the medieval period through the nineteenth century.

Contains two notebooks, one with a cover and one without, concerning the nineteenth-century figure, Seán Ó hÓgáin.

Contains an unbound quire of leaves of notes by J.J. O'Kelly dealing with different aspects of the history and culture of Kerry from the Early Medieval period to the early twentieth century.

Contains a black notebook consisting of primary sources notes by J.J. O'Kelly for a history of Kerry.

Contains five loose-leaf pages detailing plans for an oireachtas at Croke Park.

Contains two loose-leaf pages referring to "Padraig's Ballads," and seven further loose-leaf pages containing several poems.

Contains loose leaves of a printed book of ballads relating to various early Irish saints such as Bega, Ciarán, and Odhran that have been variously annotated in O'Kelly's hand, marked up in pen and blue crayon, and taped together.

Contains a top-bound notebook containing notes on various buildings and addresses in the Dublin area, concerned particularly with the sale and ownership history of each location.

Contains a number of unrelated notes on various topics including Kuno Meyer, a list of commissioners of the Board of National Education in Ireland, and a list of various newspaper editors in the United States.

Contains an expenses ledger and a short note.

Contains two pages of typescript and manuscript notices relating to the deportation of J.J. O'Kelly under the Defense of the Realm regulations. Signed by Lt.-Gen. Sir B.T. Mahon.

Contains two newspaper clippings and a letter from "Who's Who" addressed to J.J. O'Kelly. The newspaper clippings have dates appended in manuscript. The letter is dated July 1956 and has a manuscript example of the alphabet in the cló Gaelach. There is a copy of O'Kelly's entry for "Who's Who" glued to the letter and dated with O'Kelly's death in 1957 in manuscript.

Contains various envelopes, scraps of paper, typescript and manuscript notes, a drawing with notes, advertisements, and a page from a book.

Contains both a manuscript and a typescript draft of the play "Cú Chulainn is Cú Roí" by "Cú Roí". The manuscript draft includes an introductory summary of the story.

Contains a typescript draft of a submission to J.J. O'Kelly concerning Einstein's Theory of Relativity with hand written notes following the signature, "C.J.R."