Philip Chalmers Mitchell (1864–1945) was the Secretary of the Zoological Society of London from 1903–1935, second in length of office to his predecessor Philip Lutley Sclater. He was the first Secretary nominated by and voted into his position by the Fellows. Mitchell’s brainchild, ZSL Whipsnade Zoo, was opened in 1931 on Dunstable Downs, Bedfordshire, and he also arranged extensive rebuilding at ZSL London Zoo.

To learn more about key individuals in the history of ZSL search the Authority Records on the Archive catalogue by clicking "Browse" then "People and Organisations".