The in-house electronic database AnPhil, a relational database introduced with volume 66 (1995), contains more than 230 000 records ; its contents increase by appoximately 25 000 records each year. Each record is linked to a network of parallel files : Ancient authors ; Modern authors (itself linked to a file containing authoritative forms of modern authors’ names), which generates an index for the printed volume ; Series ; Journals (linked to a file of issues excerpted) ; and finally Geographic keywords, Ancient persons, and Humanists, each of which also generates an index. Bibliographic data are verified through library catalogues (such as the Library of Congress and the Bibliothèque nationale de France).