| # | Thumbnail | Reference code | Title | Dates | Access restrictions | Retrieval information |
|---|---|---|---|---|---|---|
| 1 | N/A | HC01 MRK-MRK2-MRK2.1 | 21st anniversary Humber letterhead, 1988 | 1988 | None | |
| 2 | N/A | HC01 MRK-MRK2-MRK2.2 | Folder with Humber logo | [197-] | None | |
| 3 | N/A | HC01 MRK-MRK2-MRK2.3 | Early 1980s folder | [198-] | None |