Occasionally you will find Disneyland cel set-ups that have a cel from one film and a background from another. For example it is common to see a Jungle Book cel on a litho of a Sleeping Beauty background. These are also referred to as Disneyland Art Corner cels.
Important note: ISBN numbers were introduced in 1970. Any book printed before 1970 will not have an assigned ISBN. Why Search by ISBN. ISBNs are useful when looking for a specific printing of a book. A student, for example, can search by ISBN to find the correct edition of a textbook for school.
Also during this period were the first numbering systems. Around 100A.D. was when the first 1-9 system was created by people from India. However, it wasnât until 875A.D. (775 years later) that the number 0 was invented. And yes now that numbers were created, people wanted stuff to do with them so they created calculators.