Contents: the "Secrets of the Batcave — 1968" illustrated feature by Frank Springer (an updated Batcave layout and gadget diagrams), plus classic reprints: "The 1,000 Secrets of the Batcave!" (from Batman #48), "The Birth of Batplane II!" (Batman #61), "The Secret of Batman's Utility Belt!" (Detective Comics #185),  "The 100 Batarangs of Batman" (Detective Comics #244), "The Secret of the Batmobile" (Batman #98), and "The Flying Bat-Cave!" (Detective Comics #186). Stories by Bill Finger and David Vern Reed, with art by Dick Sprang, Sheldon Moldoff, Jim Mooney, Lew Sayre Schwartz, and Charles Paris.

Graded VG+: a solid square-bound giant with moderate spine and edge wear and light cover wear; pages are cream to tan. This copy carries the small circular "1/9" UK price stamp beside the cover price — the mark Thorpe & Porter, DC's UK distributor, applied to US-printed copies sold in Britain; noted here for accuracy. Not signed; no certificate. Please review pictures for additional detail.

Ships bagged and boarded in a rigid comic mailer.