Related Clues:

• Any huge reference book
• Ones with thick spines
• 1,000-page book, e.g
• Thick volumes
• Member hiding money in book
• Books of substance
• 'The way I see it . . .'
• Antithesis of light reading?
• The Necronomicon of H.P. Lovecraft stories, e.g
• Book marked for my attention?
• I think this work's very heavy
• Great book, in my opinion
• A weighty book, in my opinion
• Fellow introducing French art books
• Item on a library shelf