Mills continued to use the ledgers for the first few years of his career with the Society, and he led the Society’s Committee on the Museum and Library in a “desire to have full, complete and reliable ‘data’ with each specimen” in the museum (Brinkerhoff and Randall 1899, 287). He was dissatisfied with the data in the ledgers and sought to establish a new system to catalog the museum’s collections. From 1899-1901, he visited institutions including the Field Museum, the American Museum of Natural History, and the Smithsonian Institution to study their cataloging systems (Brinkerhoff and Randall 1900, 370). At the 1901 annual meeting of the Society, he declared his “intention during the coming year to make a new catalogue of the entire collection and this, as you are well aware, will require a great deal of careful work” (Mills, quoted in Ohio State Archaeological and Historical Society [OSAHS] 1901, 87).
A great deal of careful work, indeed!
Mills and his team established an entirely new system for cataloging at the Society. Rather than assigning long numbers from a ledger string, objects were separated into collections. These collections grouped artifacts from the same place or assembled by the same donor. Mills gave each collection the prefix “A” – this prefix originally stood for “accession” – followed by a number. For example, the first collection cataloged this way is collection A 1 (usually written today as A 0001, the leading zeroes making it easier to sort numerically in a digital database). This collection distinguished the material that Mills removed from the Late Pre-contact Baum Village Site (33 RO 4) in the early 20th century.
Museum staff assigned identification numbers to objects within each collection. The combination of a collection number and object number would represent a catalog number for an object. For example, the catalog number A 1/226 represented the 226th recorded set (or “lot”) of objects within the Baum Village Site collection (you can find this entry by searching A 1/000226 in our online catalog).