| RefNo | HD/18/5 |
| Previous numbers | 93HD.50.14 |
| Level | File |
| Title | University of Pennsylvania |
| Date | 1939-1940 |
| Description | Correspondence inviting Dale to address the Bicentennial Conference of the University of Pennsylvania and receive an honorary degree, with printed provisional programme. Dale was unable to attend owing to the outbreak of war |
| Extent | 15 papers |
| Format | Typescript and printed documents |
| AccessStatus | Open |
| AccessConditions | OPEN - but with some restrictions |