The Bookshelf Sampler is a zipped file with 4 of the most popular titles from the complete Coradella Collegiate Bookshelf: Joseph Contrad Nostromo. Upton Sinclair The Jungle. Henry David Thoreau Walden & On Civil Disobedience. The US Constitution. Sign up for a free set of College Bookshelf sample ebooks. First* & Last Name* Email address* Library or school (optional)