221. CA 4/1 Reference (shelfmark): CA 4/1 Title: Plate Issue Books Collection Area: Philatelic Collections Languages: English Date Range: 1923-1929 Extent: 1 volume
222. CA 4/2 Reference (shelfmark): CA 4/2 Title: Plate Issue Books Collection Area: Philatelic Collections Languages: English Date Range: 1930-1958 Extent: 1 volume
223. CA 5 Reference (shelfmark): CA 5 Title: Paper Issue Books Collection Area: Philatelic Collections Languages: English Date Range: 1940-1968 Extent: 5 volumes
224. CA 5/1 Reference (shelfmark): CA 5/1 Title: Paper Issue Books Collection Area: Philatelic Collections Languages: English Date Range: 1940-1950 Extent: 1 volume
225. CA 5/2 Reference (shelfmark): CA 5/2 Title: Paper Issue Books Collection Area: Philatelic Collections Languages: English Date Range: 1949-1955 Extent: 1 volume
226. CA 5/3 Reference (shelfmark): CA 5/3 Title: Paper Issue Books Collection Area: Philatelic Collections Languages: English Date Range: 1956-1961 Extent: 1 volume
227. CA 5/4 Reference (shelfmark): CA 5/4 Title: Paper Issue Books Collection Area: Philatelic Collections Languages: English Date Range: 1960-1965 Extent: 1 volume
228. CA 5/5 Reference (shelfmark): CA 5/5 Title: Paper Issue Books Collection Area: Philatelic Collections Languages: English Date Range: 1965-1968 Extent: 1 volume
229. CA 6 Reference (shelfmark): CA 6 Title: Standing Authority Registers Collection Area: Philatelic Collections Languages: English Date Range: 1921-1968 Extent: 5 volumes
230. CA 6/1 Reference (shelfmark): CA 6/1 Title: Standing Authority Registers Collection Area: Philatelic Collections Languages: English Date Range: 1921-1951 Extent: 1 volume