Once I decided to build a Pottery Barn knock-off desk for my husband, I knew the desk would be lonely without a pair of classic bookshelves. Its hard to find good bookshelves people, especially tall ones. When you look online, you find a sea of particle board and bad laminate. Luckily, once upon a time (like... the 90's) you could easily find solid wood bookshelves. The best news is, since "they" decided oak is ugly, you can pick up a pair of these babies for peanuts on Craigslist. After a…