3 volumes · 500 issues on disk
Single Issue · folder: Main Series · Nov 1938 – Sep 1983 · number from the DC Comics wiki · old numbering: carries on an earlier series from #32
One-Shot · folder: One-Shot · May 1999 – May 1999 · number from Metron
Single Issue · folder: Main Series · Apr 2009 – Oct 2011 · number from the DC Comics wiki · old numbering: carries on Adventure Comics (1938) from #516 · Metron calls it V3