10 best show book

A "show book" is not a commonly recognized term in the context of business, professionals, academics, biographies, memoirs, or books. It's possible that the term may be a specific reference to a book or document used in a particular industry or profession, but without additional context, it's challenging to provide a precise definition or explanation.

If you have more specific information or context about what a "show book" refers to, please provide it, and we would be happy to offer more relevant information or assistance. Otherwise, if it's a term or concept that is not widely known, it may not have a well-established meaning in the mentioned contexts.