| Chronological |
DCRB for pre-1820 imprints
AACR2 for imprints dated 1820 & after |
| Geographical |
DCRB for Pennsylvania imprints
DCRB Core for remainder of collection |
| Topical |
DCRB for medical books
AACR2 for remainder of collection |
| Item-by-item | Cataloger or curator decides |
| Combination |
DCRB Core for pre-1860 imprints Cataloger's choice for remainder of collection |