History
Thomson began as a Helper at ZSL London Zoo in 1869, became a full Keeper in 1871, served as a Clerk in Bartlett's office from 1873 to 1889, when he became Head Keeper, until his appointment as Assistant Superintendent in 1899
Occupations
ZSL Staff, ZSL Assistant Superintendent, ZSL Helper, ZSL Keeper, ZSL Clerk
