Built on 50-years of data in the Isis Bibliography of the History of Science.
*(See today's featured citation and concept below.)*
The article surveys the evolution of the Isis bibliographical classification systems over the past century. Begun in 1913 by George Sarton, the Isis Bibliography is continued to this day under the auspices of the History of Science Society. The classification systems have developed and changed gradually over the years, the most recent change being in 2002 when the author took charge of the publication as bibliographer. Changes in both scholarly interests and practice, on the one hand, and digital research technologies, on the other, have guided these most recent revisions. Each citation in the Isis bibliography receives two types of subject tagging, an ordered classification into a fixed category and indexing according to an expandable thesaurus. Precisely how these two types of subject tagging work now and how they came to be this way is the focus of this paper.

The 2023 Annual Bibliography was published at the end of December. You can find it at the University of Chicago Press Isis journal site.

See the 2023 special issue: Bibliographic Essays on the History of Pandemics.

The Explore interface provides users with a lot of information in an intuitive format. It links scholarship, scholars, and subject matter together in especially useful ways. Build your bibliography quickly with recommendations from related citations.

Dig deep into our data about the discipline of history of science. The playground tools give interactive data visualizations, helping you to capture more about the discipline. See patterns in publications, discover historical trends, and explore connections between concepts. Try it out: https://data.isiscb.org/p/isis/playground

[https://blog.isiscb.org/aboutoverview/](https://blog.isiscb.org/aboutoverview/)
Stephen P. Weldon, HSS Bibliographer and IsisCB Project Director
Department of History of Science, Technology, and Medicine
University of Oklahoma
601 Elm Street, Physical Sciences Building Room 618
Norman, Oklahoma 73019
Email: isisbibliography@gmail.com