zapatista wrote:
In answer to your question, the "classic stuff" is generally considered to be the post WW2 material from 1945 to the end of the series in 1952.  In the DC Archives, that corresponds to vols 12-24.



The classic era comes to an end around early 1951 when Eisner starts becoming less involved in the strip. The last year and a half it's a shadow of what it once was, and there's hardly any Eisner involvement.