Edison has a rivalry with Nikola Tesla over whether direct or alternating current is better. They are doing tests together when a mastodon appears through a time-hole. Colonel Tick-Tock arrives to deal with the situation, and Edison attempts to patent both the mastodon and the Colonel. Instead, Tesla's soothing voice allows Colonel Tick-Tock to send the mastodon back in time.
- Electric Rivalries (TAH #31)
- Electric Park (TAH #87)