I stumbled across one of the Amazing Buffalito and Conroy stories, and it seemed that Buffalito Reggie (a cute miniature bison that eats anything and farts oxygen) just had to be living in a universe with time travel. In “Trial of the Century,” Reggie's companion Conroy (the billionaire ex-CEO turned spacefaring on-stage hypnotist) has a time-travel gag in his act; and in the first novel, Buffalito Destiny, the entire ex-state of Texas has differing time rates from one spot to another. But I just had to know for sure whether the amusing pair ever ran into real time travel, so I wrote to Lawrence Schoen, and he quickly and happily pointed me toward the novella Calendrical Regression, wherein Conroy brings a Mayan high priest to the present day from 89 generations in the past.