Four issue series. Reprints (single issues) The Tower Comics Dynamo (#1-4) Collected Editions The Complete Tower Dynamo (#1-4) T.H.U.N.D.E.R. Agents Classics vol. 2 (#1) T.H.U.N.D.E.R. Agents Classics vol. 3 (#2) T.H.U.N.D.E.R. Agents Classics vol. 4 (#3) T.H.U.N.D.E.R. Agents Classics vol. 5 (#4)