Magical atlas journey through time

Main hero of my book series  is a 12years old girl Bára, who travels with a help of magical atlas to the past. Her adventures in the past ar based on very real histoy; she meets not only fictive, but also real persons. The stories are adventurous and educative as well. There are only two fantasy features: a magical atlas and Barcha the cat who seems to appear in the past as a human and if need be she gets Bára out of trouble. Target group 8 – 14 age, but appreciated by adults („family“ books") and schools  also .