E-books used to focus on niche topics geared toward small, zany readerships, which made for riveting titles such as Abraham Lincoln in the Kitchen or The Hidden Power of Adjustment Layers in Adobe Photoshop. Now e-books cover the gamut, and the Santa Clara County Library District announced this week that it has 46,000 digital titles in its collection, including pop culture favorites like Wolf of Wall Street and 50 Shades of Grey—you know, if you’re into corporate barbarism or Penthouse letters.