First issue with ""Letters to the Bat-Cave".
Letterer credit by Martin O'Hearn and Joe Desris.
in Batman Annual (DC, 1961 series) #7 (Summer 1964)
in DC Comics Classics Library: The Batman Annuals (DC, 2009 series) #2 ([August] 2010)Script credit by Martin O'Hearn. Inker credit verified by Charles Paris.
in Batman (DC, 1940 series) #187 (December 1966 - January 1967)
in 80 Page Giant (DC, 1964 series) #G30 (December-January 1967)
in Lynvingen (Se-Bladene, 1966 series) #5/1968 ([mai] 1968)Script credit by Martin O'Hearn. Inker credit verified by Charles Paris.
in 80 Page Giant (DC, 1964 series) #12 (July 1965)Pencil credit verified by Dick Sprang, inker credit verified by Sheldon Moldoff.