I've made an epub version of Mises' The Anticapitalistic Mentality , which is available here; this site will only accept files with a limited number of extensions, and .epub isn't among them, so I renamed it to .zip to get past the e-nazi (actually, it is a zip file; but it's not necessary to unzip it, just rename it to .epub)
A Firefox extension for reading e-books is OpenBerg Lector.
Also Étienne de la Boétie, The Politics of Obedience: The Discourse of Voluntary Servitude.