[ WP ] A Time Traveler inadvertently leaves behind a copy of a very modern book in 19th Century England . What book was forgotten and what results did it have ?

I wandered to the door, shame burning on my face, `` Dave, we have a problem. ``, Dave turned to me confusion on his face `` What is it Sheila?'' 
 
 `` Well remember how we took that trip to nineteen century England? ``, Dave nodded slowly `` Well i may kinda have left my copy of Fallout Equestria there.... your not mad are you?'' Dave sighted and slowly shook his head `` Sheila, I'm not mad, a little annoyed that we wo n't get our deposit back again but a fiction book would n't do much to the time line.... Sheila why are you looking at me like that, what are you not telling me? ``, ``.....It..it was on my Kindle''
