HYDRA appears in 9 issues in this volume.
And A Hydra New Year!
April 1, 1975
Foggy Nelson, Agent Of S.H.I.E.L.D.!
May 1, 1975
HYDRA - AND - SEEK
June 1, 1975
Holocaust In The Halls Of H.Y.D.R.A.!
July 1, 1975
June 1, 1984
Tree Of Knowledge - Part 1
March 1, 1994
Tree Of Knowledge - Extra: Apprehensions
May 1, 1994
Tree Of Knowledge - Part 5: The Line Eaters
August 1, 1994
Tree Of Knowledge - Conclusion: Softwar
September 1, 1994
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