The introduction of Amazon's Kindle eReader in 2007 and of Barnes & Noble's Nook eReader in 2010 brought with them an excitement for e-books and a sudden increase in user adoption of the format. In less than a decade's time, however, enthusiasm for e-books quickly leveled off. This article examines e-books as a format in comparison with other resource formats through the lens of the Resource Description and Access content standard as a way to better understand the resilience to supersession that print has displayed in the face of e-books.