The BHL and Encylopedia of Life (EOL) share the vision of open access to knowledge about life on earth. BHL works to achieve this goal by providing open access to biodiversity literature. EOL tackles this challenge by gathering, generating, and sharing biodiversity knowledge in an open, freely accessible digital repository. BHL and EOL have been collaborating since 2007, sharing content, best practices, and expertise. Both websites are also extensively interlinked. Taxa identified on pages in BHL are linked to the corresponding species page in EOL.