Note: See revised ordering of section X.
| New Correspondence | Date | Subsequent Catalogue Numbers Have been Re-numbered as follows |
|---|---|---|
| X.C.21 | 24 December 1922 | +1 |
| X.C.74 | 14 March 1925 | +2 |
| X.C.75: | Easter, [12 April] 1925 | +3 |
| X.C.96: | [25 December] 1925 | +4 |
| X.C.98 | 14 March 1926 | +5 |
| X.C.99 | Easter [4 April] 1926 | +6 |
| X.C.152 | 24 June 1927 | +7 |
| X.C.168 | 14 March 1928 | +8 |
| X.C.205 | 1929 | +9 |
| X.C.206 | 14 March 1930 | +10 |
| X.C.255 | postmark: 2 December 1933 | +11 |
| X.C.256 | 14 March 1934 | +12 |
| X.C.258 | postmark: 27 July 1936 | +13 |
| X.C.259 | postmark: 22 November 1936 | +14 |
| X.C.260 | [25 December] 1937 | +15 |
| X.C.261 | [25 December] 1937 | +16 |
| X.C.262 | [?1937] | +17 |
| X.C.263 | 14 March 1938 | +18 |
| X.C.275 | n.d. | +19 |
| X.C.276 | n.d. | +20 |
| X.C.277 | n.d. | +21 |
| X.C.278 | n.d. | +22 |