Classic: Alternate Earths

Classic: Alternate Earths (1996) describes in detail several alternate earths.
There is an additional book called GURPS Alternate Earths 2 in this series.
In addition to fleshing out what in 4e would become Homeline's Infinity it contains information on: 
* Dixie (renamed Dixie-1 in GURPS Infinite Worlds)
* Reich-5
* Roma Aeterna
* Shikaku-Mon
* Ezcalli
* Gernsback
Suggestions for crossovers:
* Espionage
* Horror
* Supers
* Psionics
* Riverworld
* Mage: the Ascension
* Terradyne
* The Prisoner
== See Also ==
* Aesop, Pyramid article
* GURPS Alternate Earths Designer's Notes 
Category:1996
Category:Classic
Category:Alternate Realities