3 siblings from California (?) time travel back to the late 1800s/early 1900s in Manhattan where they find themselves in a townhouse. I know there was an elevator in the townhouse. Towards the end of the book, the time traveling siblings saved the occupants of the townhouse when a blizzard knocked out the electricity and left them stranded in the elevator between floors. Thanks!
Thanks! That is it!
Thanks! That is it!