Transform your space with our Vintage Spring Mix: Color By The Foot. Order as many linear feet as you need to complete your project. Authentic vintage decorative hardback books in shades of greens and blues. All books are published 1900-1989 and include a variety of fiction and non-fiction titles. Each linear foot contains 10-12 books with an average height of 6-9". Exact titles will differ from those pictured.