Letters and papers of T. P. Gill, secretary, Department of Agriculture and Technical Instruction, 1900-1923, relating, inter alia, to the Plan of Campaigh, 1886-1890, the Parnell crisis, 1889-1891, the cooperative movement, the Irish Convention, 1917, the Government of Ireland Bill, 1920; correspondents include Archbishop Croke (thirteen letters to Wm. O'Brien, 1889-1891) and Horace Plunkett (writer of about 500 letters, 1891-1923). About 5000 documents, 1871-1931.