Power Tools - Strange Meeting (1987)
"The ancestors of modern Sleestak were the Altrusians. Their civilization fell approximately 1,000 years earlier. The Sleestak sometimes use the term 'Altrusian' to refer to themselves and sometimes to refer only to these ancestors. Physically, the Altrusians were similar to Sleestak, with the former marked by a shorter stature, an extra finger on each hand, and a golden yellow skin tone. Intellectually they were very different, however. The Altrusians possessed advanced psionic technologies based on light crystals and understood a great deal about the operation of the Land of the Lost. They strove for calm emotionlessness and as a result could be both cooperative and quite callous."
- "Sleestaks, Ancestors of" (Encylopedia of Lost History, Vol. MCMXVII)