U.S.S. POSEIDON: CREDITS

Mark H.aka Commodore Travis Christopher created the USS Poseidon RPG and its website, whose material was heavily reused with his permission, most particularly technical specifications and aerospace material. He also created the original Outer Perseus gameverse concept.
Ex Astris Scientia for a site full of information and images	Daystrom Institute Technical Library a priceless canon resource
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Star Trek Australia Com - ever since DevilsWorld!

Trek Core for the various thumb pictures of ships (Ambassador, Sovereign, Prometheus)

Gilso's Star Trek Schematics for great cutaways and those beautiful Fleet Charts.

Memory Alpha - another incredibly comprehensive source of canon info