| Collection Name | Tate Public Records: Trustees: Legal documents |
| RefNo | TG 1/2/8 |
| Level | File |
| Title | Supplemental agreement as to extension of the National Gallery of British Art |
| Date | 1925 |
| Access Status | USE OF SURROGATE REQUIRED |
| Access Conditions | Fragile original document. Use of the surrogate stored in Public Records - Red Zone is required. |
| Location | Safe |
| Description | 1. Sir Joseph Duveen
2. The Commissioners of His Majesty's Works and Public Buildings |