Original: Griffin, Bruce W. (/O1996/O), "The Paleographical Dating of P-46" Some leaves are part of the Chester Beatty Biblical Papyri, and others are in the University of Michigan Papyrus Collection.
Simplified: Griffin, B (/O1996/O), "The Some leaves are part of the Chester Beatty Biblical Papyri Collection, and others are in the Papyri Collection of the University of Michigan.