The Good Master - Kate and Jancsi, Bk 1 Author:Kate Seredy Young Jancsi and his cousin Kate from Budapest race across the Hungarian plains on horseback, attend country fairs and festivals, and experience a dangerous run-in with gypsies.
The back cover reads "Jancsi is overjoyed to hear that his cousin from Budapest is coming to spend the summer on his father;s ranch on the Hungarian plains. But their summer proves more adventurous than he had hoped when headstrong Kate arrives, as together they share horseback races across the plains, country fairs, and a dangerous run-in with the gypsies.
In a vividly detailed scenes and beautiful illustrations, this Newbery Award-winning author presents an unforgettable world and characters who will be remembered forever."
I've never read this book but I hear it is very good.