Photograph album created by Lt. Col. M. O'Carroll Fitz-Simon, M.C. , who began his military career in Prince of Wales' Leinster Regiment, which was headquartered at Birr. The photographs document a peace-keeping mission the Leinsters undertook in Silesia (now part of Poland) from their departure at Dover on 31 May 1921, through Germany and to their destination of Oppeln (Opole in Poland today). Following the disbandment of the regiment in June 1922, Fitz-Simon joined the King's Own Regiment, Lancaster and the remaining photographs in the album depict scenes from missions in India and Burma. There is also a small number of photographs of people and houses in the Birr area including Whigsborough House, and the burnt out remains of Birr Barracks (following its destruction in the Civil War in July 1922).

Letter from Professor H S Raper of the Department of Physiology, The University of Manchester, Manchester, to Doctor Francis William Lamb, notifying them that due to present crisis (England had just entered World War II), he and the Vice-Chancellor agree that a celebration is inappropriate, and suggests that instead they will simply provide the funds for him to pay for the silverware chosen as a parting gift from the Department of Physiology.

Copy correspondence between two generations of Perkinson and Monaghan family members, all connected with Croghan, near Birr, Co Offaly and the Irish Hills area of the state of Michigan, USA. Following the devastation of the Great Famine, John Monaghan emigrated firstly to Suffolk and then to Michigan, where he received letters from his sister, Mary and her husband William Perkinosn, pleading for assistance to also enable their family emigrate to America. The correspondence describes the effect of famine and emigration on the Croghan area. Their son William, who emigrated to Lancashire, also writes to his cousin in Michigan of the second generation with much the same request.

File of diaries belonging to Theodora Trench.

From 1917 until 1919 Theodora volunteered as Chauffeuse with the Red Cross's Voluntary Aid Detachment. Throughout the early diaries she writes about her experiences resulting from this volunteer work and the responsibilities she was required to carry out. Examples of such entries include one she wrote on 18 January 1918 she writes 'Evacuation 4.45 am breakfast 4.15. Cleaned engine a little. 1.30 went to Richmond football match & Austin lunchtime.' Another example includes an entry from 12 January 1919 'On duty all day (night duty) inspection 11.30'.
Theodora also uses the diaries to record her her daily life. On 5 February 1921 she records attending a concert, 'Concert Albert Hall (Samson & Delilah)' and on 23 may 1922 she writes about going to the Chelsea Flower show 'S & I went to Chelsea Flower Show. Very hot & [humid] but beautiful flowers...'.