Ficheiro Epigrafico CD-ROM
Not a rare book, or even a book, but Worldcat shows no sign of any library having the Ficheiro Epigrafico CD-ROM produced by José d’Encarnação and Joaquín L. Gómez-Pantoja, which includes in .pdf format issues 1-66 (1982-2001) as well as new and revised indexes and a concordance with AE, CIL II, and HEp.
Available for purchase from Dr. Encarnação. Information is at http://www1.ci.uc.pt/iauc/pub/fe.html.