Letters to Michael J. Lennon, mainly regarding his research into the family of Arthur Griffith, but also containing references to John Chartres and Herbert Moore Pim, with some notes by Lennon and associated material, correspondents include Sidney Arnold, Eamonn Bulfin, W. F. Casey, Geraldine Dillon, Séumas Fenton, Nevin Griffith and Bulmer Hobson, c. 1946-1954.

Míreanna comhchosúla

• Review of Ireland yesterday and to-morrow, by Bulmer Hobson.
  de réir: H., P. J.
  Foilsithe / Cruthaithe: (1968)
• Hobson's ascendancy pamphlet "A book of Dublin" 1929 and 1930 (a commentary on "A book of Dublin" edited by Bulmer Hobson).
  de réir: Cuana
  Foilsithe / Cruthaithe: (1930)
• Bulmer Hobson boosts his handbook: editorial on the official handbook of Saorstát Éireann.
  Foilsithe / Cruthaithe: (1931)
• Bulmer family chronicle from before 1050 to 1936. By Mary A. Bulmer Hobson.
  de réir: Bulmer Hobson, Mary A.
• Two books on Dublin City ("A book of Dublin, 1929" by Bulmer Hobson and "Dublin" Civic week Official Handbook, 1929)
  de réir: Inis Coaltra
  Foilsithe / Cruthaithe: (1929)