What is "blue book"?

[Gray]

From a movie "Snow dogs" --

Jack: How much this dog costs?
Ted: I have to see the blue book first.

What is "blue book"?
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First lesson - English, not english. I, not i. ~A student of English

[Milanya]

Blue book is a term used in various fields. It often refers to an almanac or other compilation of statistics and information. The term is traced to the large blue velvet-covered books used for record-keeping by the Parliament of the United Kingdom beginning in the 15th century.
http://en.wikipedia.org/wiki/Blue_book

blue book Function: noun
Date: 1835
1 : a register especially of socially prominent persons
2 : a book of specialized information often published under government auspices
3 : a blue-covered booklet used for writing examinations
4 : a periodically issued price list (as of used cars)
http://www.ask.com/bar?q=blue+book+definition&page=1&qsrc=2417&zoom=Mobile+Homes+Blue+Book+Values%7CMotorcycle+Blue+Book%7CGuitar+Blue+Book+Online&ab=3&u=http%3A%2F%2Fwww.merriam-webster.com%2Fdictionary%2Fblue%2Bbook
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con·text - The part of a text or statement that surrounds a particular word or passage and determines its meaning.

[Kitosdad]

Milanya, your picture does not do you justice. Do you have another which is more close-up.?
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Keep it simple ... Keep it interesting.