1. Blackburn Coll 1 Reference (shelfmark): Blackburn Coll 1 Title: The Blackburn Collection of Asturias Flag Issues Collection Area: Philatelic Collections Languages: Spanish Date Range: 1936-1937 Extent: 1 Volume, 14 Items
2. Blackburn Coll 2 Reference (shelfmark): Blackburn Coll 2 Title: The Blackburn Collection of Oviedo Censor Marks Collection Area: Philatelic Collections Languages: Spanish Date Range: 1937-1943 Extent: 180 Items
3. Blackburn Coll 2/3 Reference (shelfmark): Blackburn Coll 2/3 Title: The Blackburn Collection of Oviedo Censor Marks Scope & Content: Cover of unknown date from Las Arriondas with a Heller (2000 Ed) A134.2 type censor mark. Collection Area: Philatelic Collections Languages: English and Spanish Date Range: 1936-1939 Extent: 1 Page; 1 Item
4. Blackburn Coll 2/4 Reference (shelfmark): Blackburn Coll 2/4 Title: The Blackburn Collection of Oviedo Censor Marks Scope & Content: Registered cover dated 1st November 1939, from Las Arriondas with a Heller (2000 Ed) A134.1 type censor mark. Collection Area: Philatelic Collections Languages: English and Spanish Date Range: 1 Nov 1939 Extent: 1 Page; 1 Item
5. Blackburn Coll 2/5 Reference (shelfmark): Blackburn Coll 2/5 Title: The Blackburn Collection of Oviedo Censor Marks Scope & Content: Cover dated 14th October 1939 from Las Arriondas with a Heller (2000 Ed) A134.1 type censor mark. Collection Area: Philatelic Collections Languages: English and Spanish Date Range: 14 Oct 1939 Extent: 1 Page; 1 Item
6. Blackburn Coll 3 Reference (shelfmark): Blackburn Coll 3 Title: The Blackburn Collection of the Personalities Series Collection Area: Philatelic Collections Languages: Spanish Date Range: 1931-1938 Extent: 122 Items
7. Blackburn Coll 4 Reference (shelfmark): Blackburn Coll 4 Title: The Blackburn Collection of Political Salutations Collection Area: Philatelic Collections Languages: Spanish Date Range: 1938-1949 Extent: 74 Items
8. Blackburn Coll 5 Reference (shelfmark): Blackburn Coll 5 Title: The Blackburn Collection of the Province of Huelva Collection Area: Philatelic Collections Languages: English and Spanish Date Range: 1936-1939 Extent: 242 Items
9. Blackburn Coll 6 Reference (shelfmark): Blackburn Coll 6 Title: The Blackburn Collection of the 'Winter Relief' Campaign Collection Area: Philatelic Collections Languages: English and Spanish Date Range: 1936-1939 Extent: 35 Items
10. Blackburn Coll 7 Reference (shelfmark): Blackburn Coll 7 Title: The Blackburn Collection 'Crusades Against the Cold' Campaign Collection Area: Philatelic Collections Languages: English and Spanish Date Range: 1936-1939 Extent: 61 Items