O Brian (Dr.). 1 card. <1 MB. More..
  [Senate House MS901/3/7].

O' Bryen (Dennis). 1 card. <1 MB. More..
  [Senate House MS901/3/7].

O. (J.) [pt. 1]. 1 card. <1 MB. More..
  [Senate House MS901/3/7].

O. (J.) [pt. 2]. England. 1 card. <1 MB. More..
  includes: Jacobite song [Senate House MS901/3/5].

O. (W. B.). 1 card. <1 MB. More..
  [Senate House MS901/3/7].

Oakeley Family. 1 card. <1 MB. More..
  [Senate House MS901/3/7].

Oakley. Bedfordshire, England. 1 card. <1 MB. More..
  [Senate House MS901/2/15].

Oates (Titus) (1649 – 1705). England. 27 cards. 2 MB. More..
  [Senate House MS901/3/7].

O'Brien (Captain Donat Henchy), R.N. (1785 – 1857). 1 card. <1 MB. More..
  [Senate House MS901/3/7].

O'Brien Family. Ireland. 2 cards. <1 MB. More..
  [Senate House MS901/3/7].

Obthorp (Hugh), of Boston. Lincolnshire, England. 1 card. <1 MB. More..
  [Senate House MS901/3/7].

O'Byrne Family. Wicklow, Ireland. 1 card. <1 MB. More..
  [Senate House MS901/3/7].

O'Callaghan (Patrick) (? – 1875). 7 cards. <1 MB. More..
  [Senate House MS901/3/7].

Ockham. Surrey, England. 1 card. <1 MB. More..
  [Senate House MS901/2/15].

Ockley (Rev. Simon). Cambridgeshire, England. 1 card. <1 MB. More..
  professor of Arabic at Cambridge and Vicar of Swavesey [Senate House MS901/3/7].

O'Connell (Daniel Charles, comte) (1745 – 1833). Ireland. 1 card. <1 MB. More..
  [Senate House MS901/3/7].

O'Connell (Daniel) (1775 – 1847). Ireland. 8 cards. <1 MB. More..
  [Senate House MS901/3/7].

O'Connell (Sir Ross), Bart., of Lakeview, Killarney. Kerry, Ireland. 1 card. <1 MB. More..
  [Senate House MS901/3/7].

O'Connor (Arthur) (1763 – 1852). Ireland. 1 card. <1 MB. More..
  [Senate House MS901/3/7].

O'Conor (Charles), of Belanagare (1710 – 1791). Roscommon, Ireland. 2 cards. <1 MB. More..
  [Senate House MS901/3/7].