The Time Traveller's Almanac
From Jenny Everywhere Wiki
The Time Traveller's Almanac was a book which was given to one version of Jenny Everywhere by Santa-Jenny in the Infinite one Christmas. (COMIC: Jenny's Christmas Surprise)
Behind the scenes
The Time Traveller's Almanac was an anthology science fiction book published by Tor Books. Among numerous other stories, it includes "Pale Roses" by Michael Moorcock and an excerpt from The Time Machine by H. G. Wells.