E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
The three surviving books of the Sibyl Amalthæa were preserved in a stone chest underground in the temple of Jupiter Capitolinus, and committed to the charge of custodians chosen in the same manner as the high priests. The number of custodians was at first two, then ten, and ultimately fifteen. The books were destroyed by fire when the Capitol was burnt (A.D. 670).
Sibylline Books. A collection of poetical utterances in Greek, compiled in the second century (138167). The collection is in eight books, relates to Jesus Christ, and is entitled Oracula Sibylina.