The Secret of Prosperity
Benjamin Franklin & Marcus Aurelius & Lao Tzu & James Allen & Wallace D. Wattles & William Walker Atkinson & P. T. Barnum & Orison Swett Marden & Russell Conwell & Henry Harrison Brown & Thorstein Veblen & Émile Coué & Kahlil Gibran & Niccolò Machiavelli
Holy Sci-Fi!: Where Science Fiction and Religion Intersect
Paul J. Nahin
Trenton and Princeton 1776–77: Washington Crosses the Delaware
David Bonk
Social Problems - German Version
Henry S. George
CK-12 Trigonometry - Second Edition
Ck-12 Foundation
The Routledge Handbook of Political Epistemology
Michael Hannon & Jeroen de Ridder