Inspirations and additional sources
Jackson, Steve and John M. Ford. GURPS Time Travel, Steve Jackson Games.
     General background (Time Corps/Stopwatch).

Hatherley, Steve. Titanic! in Time Travel Adventures, Steve Jackson Games.

     Entire Titanic adventure, and most NPCs.

Koke, Jeff. A Nile Elation in Time Travel Adventures, Steve Jackson Games.

     Entire Israelo-Egyptian adventure.

Time Tunnel. Produced by Irwin Allen.

     Time machine used.

Titanic. Directed by James Cameron.

     Details about the famous ship's sinking.
Dedman, Stephen. GURPS Dinosaurs, Steve Jackson Games.
     Dimetrodon and primeval Earth

With some regret, an 18-year interruption in the campaign means we couldn't use:

Koke, Jeff. A Nile Elation in Time Travel Adventures, Steve Jackson Games.

     An Israelo-Egyptian adventure, now only referenced