Sodaro, Robert J. "The Resplendent Sound of T.H.U.N.D.E.R.!" Comics Value Annual (1999). Archived on ThunderAgents.comArchived 2016-03-03 at the Wayback Machine. Accessed Feb. 8, 2014.
web.archive.org
Sodaro, Robert J. "The Resplendent Sound of T.H.U.N.D.E.R.!" Comics Value Annual (1999). Archived on ThunderAgents.comArchived 2016-03-03 at the Wayback Machine. Accessed Feb. 8, 2014.