This issue has variants.
Mistakenly labeled 600th appearance of Batman anniversary issue. Actually 601st appearance in Detective Comics.
Redone version of "Case of the Chemical Syndicate" from Detective Comics #27. Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics. The title of this story is how the story is listed in the editorial records. The title was changed when the story was originally published.
Redone version of "Case of the Chemical Syndicate" from Detective Comics #27
Redone version of "Case of the Chemical Syndicate" from Detective Comics #27