Herbert Clinch : material relating to a 1935 trip to the Soviet Union, GBR/0012/MS Add.9996. Cambridge University Library.

Herbert Clinch : material relating to a 1935 trip to the Soviet Union, GBR/0012/MS Add.9996. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/resources/9261 Accessed September 27, 2023.