Which author of the series "My America", is also the author of the series "Magic Tree House"?
Magic Tree House The Magic Tree House is an American series of children's books written by American author Mary Pope Osborne. The original American series is illustrated by Salvatore Murdocca, although other illustrators have been used for foreign-language editions.
Marion Holland Marion Holland (July 17, 1908 – April 6, 1989) was an American children’s book writer and illustrator from Washington, DC. Holland’s best-known books were "A Big Ball of String"; "No Children, No Pets"; "Billy Had a System"; and "The Secret Horse." "A Big Ball of String" (1958), which sold more than a million copies, was one of the six original Beginner Books published by Random House, along with "The Cat in the Hat" by Dr. Seuss.