About one-fifth of the five hundred books Newbery produced were children's stories, including ABC books, children's novels and children's magazines. He published his own books as well as those by authors like Samuel Johnson and Oliver Goldsmith. Scholars have speculated that Goldsmith or Giles and Griffith Jones wrote "The History of Little Goody Two-Shoes", Newbery's most popular book. It had 29 editions between 1765 and 1800. Some sources credit Newbery with publishing the first edition of Mother Goose in England, but others now say the book may have been planned, but was never actually produced. Newbery also published a series of books written by "Tom Telescope" that were wildly popular, going through seven editions between 1761 and 1787 alone. These were based on the emerging science of the day and consisted of a series of lectures given by a boy, Tom Telescope. The most famous is "The Newtonian System of Philosophy Adapted to the Capacities of Young Gentlemen and Ladies".