Material relating to Tullamore Incident, March 1916 and the 1916 Rising from the family of Séamus O'Brennan and his brother Alo O' Brennan. Contains postcards, photographs, contemporary newspapers (1916-1917), memoirs, and commemorative newspapers (1966).
The collection consists of 54 bound volumes including letter books, client account ledgers, and cashbooks. The largest series is the letterbooks, which contain carbon copies of outgoing letters sent by Rogers & Co., Solicitors. It is not a full set, with letterbooks from 1916–26 and 1928–30 not extant. Other shorter gaps in the sequence also appear. All letterbooks contain an alphabetical surname index of clients. The rest of the collection is more financial in nature, consisting of series of cash ledgers, client account ledgers, cheques issued ledgers, a costs copying volume and a daybook recording daily work for current clients.