Mummies in the Morning is the third book in the Magic Tree House series. It was written by Mary Pope Osborne and illusrated by Sal Murdocca. It has sixty-five pages and ten chapters. It was published and released in 1993 It was re-released by Scholastic Inc. by arrangement with Random House Inc. in 1996, It was printed in the United States. It was the first book in the series to have two different covers.