The DC Comics Encyclopedia. London: Dorling Kindersley. p. 52. ISBN 0-7566-4119-5 ↑ Batman #400 ↑ Batman #485-486 ↑ Detective Comics #684 ↑ Batman #518-520 ↑ Detective Comics #697 ↑ Gotham Underground #1 ↑ Catwoman #83 (January 2010) 1 2 Detective Comics Vol.