1842 6 Aug. 1/5 (advt.) The best gold leaf cheaper than at any other house in Bristol. Skewings and empty gold books taken in exchange.
1903 VIII. 370/2 The gilding material is sold in ‘books,’ a gold book usually containing 24 leaves, 3 inches square.
2018 www.carolventura.com 28 Feb. (O.E.D. Archive) Gold leaf workshop... Twenty five sheets of gold leaf are..individually cut to size and placed between sheets of paper to produce a ‘gold book’.