The 'World List': an alphabetical list of all the periodicals in all countries publishing the results of scientific research, with standard abbreviations for the titles of each. At this point, Peter Chalmers Mitchell was the Chair

The Zoological Record is a print and electronic index of zoological literature. It is the world's oldest continuing database of animal biology. Considered the world's leading taxonomic reference, and with coverage back to 1864

Collection of biographical notes on Yarrell; bibliography of his published works; copies, transcriptions and abstracts of letters to and from Yarrell; copies of wood block engravings