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.
The check digit of an ISBN is calculated in a more complex way than the check digit of a PostNET code. For an ISBN check digit, multiply the first digit by 10, the second digit by 9, the third digit by 8, ..., the ninth digit by 2 and add up all these numbers. The check digit is the number you have to add to this total to get up to a multiple of 11. So, for the second example given above, we would calculate: