Correspondence: Joseph Wilson Lowry to HR Mill

Letter to Edward Speyer from Sir Donald Francis Tovey

Letter to Paul Adolf Hirsch from Hubert James Foss

Correspondence of Joseph Black IV

Letter to Edward Joseph Dent from Sir Donald Francis Tovey

Letter to Edward Speyer from Sir Donald Francis Tovey

Correspondence to Sir Archibald Geikie: W[illiam] G[rylls] Adams to Paul Apfelstedt

Letter to Sir Donald Francis Tovey from Erik Chisholm

Letter to Sir William Henry Hadow from Sir Donald Francis Tovey

Correspondence of Sir Charles Lyell, Pe-Sh

Photographs of Pontecorvo with friends and colleagues in Cold Spring Harbor 1956, and at a meeting about Recombination, c1960

Correspondence from Joseph Beete Jukes and family

Selection of slides for a talk on the history of genetics

Correspondence of Sir Archibald Geikie A-M

Correspondence: WA Herdman to Joseph Dalton Hooker

Photographs of Pontecorvo with friends and colleagues in Cold Spring Harbor 1946, and in Switzerland in 1953