| StorageSite | UCL Institute of Education |
| AdminHistory | Hanff was the adopted son of Robin and Heather Tanner. In the academic year 1958-1959 Dietrich Hanff attended the 'Course on the Education of Children in the Junior School' organised by Christian Schiller at the University of London Institute of Education. |
| CustodialHistory | National Primary Education Archive Accession Nos. 92/5; 93/11 |