P. T. Barnum, Benjamin Franklin, Wallace D. Wattles, William Walker Atkinson, Orison Swett Marden, James Allen, Russell Conwell, Henry Harrison Brown, Thorstein Veblen, Emile Coué, Kahlil Gibran, Marcus Aurelius, Niccolò Machiavelli & Lao Tzu
Wallace D. Wattles, William Walker Atkinson, P. T. Barnum, Benjamin Franklin, Orison Swett Marden, James Allen, Russell Conwell, Henry Harrison Brown, Thorstein Veblen, Emile Coué, Kahlil Gibran, Marcus Aurelius, Niccolò Machiavelli & Lao Tzu
Wallace D. Wattles, William Walker Atkinson, P. T. Barnum, Benjamin Franklin, Orison Swett Marden, James Allen, Russell Conwell, Henry Harrison Brown, Thorstein Veblen, Emile Coué, Kahlil Gibran, Marcus Aurelius, Niccolò Machiavelli & Lao Tzu
Napoleon Hill, Wallace D. Wattles, Lao Tzu, William Walker Atkinson, P. T. Barnum, Benjamin Franklin, Orison Swett Marden, James Allen, Russell Conwell, Henry Harrison Brown, Thorstein Veblen, Emile Coué, Kahlil Gibran, Marcus Aurelius, Niccolò Machiavelli, B. F Austin, Charles F. Haanel, Robert Collier, Elbert Hubbard, William Crosbie Hunter, Harry A. Lewis, Florence Scovel Shinn, George Matthew Adams, Genevieve Behrend, Elizabeth Towne & Ralph Waldo Trine
P. T. Barnum, Benjamin Franklin, Wallace D. Wattles, William Walker Atkinson, Orison Swett Marden, James Allen, Russell Conwell, Henry Harrison Brown, Thorstein Veblen, Emile Coué, Kahlil Gibran, Marcus Aurelius, Niccolò Machiavelli & Lao Tzu
Napoleon Hill, George S. Clason, James Allen, P.T. Barnum, Florence Scovel Shinn, Henry Harrison Brown, Russell H. Conwell, Wallace D. Wattles & Marcus Aurelius
Wallace D. Wattles, William Walker Atkinson, P. T. Barnum, Benjamin Franklin, Orison Swett Marden, James Allen, Russell Conwell, Henry Harrison Brown, Thorstein Veblen, Emile Coué, Kahlil Gibran, Marcus Aurelius, Niccolò Machiavelli, Lao Tzu, B. F Austin, Charles F. Haanel, Robert Collier, Elbert Hubbard, William Crosbie Hunter, Harry A. Lewis & Florence Scovel Shinn
Napoleon Hill, Wallace D. Wattles, Lao Tzu, William Walker Atkinson, P. T. Barnum, Benjamin Franklin, Orison Swett Marden, James Allen, Russell Conwell, Henry Harrison Brown, Thorstein Veblen, Emile Coué, Kahlil Gibran, Marcus Aurelius, Niccolò Machiavelli, B. F Austin, Charles F. Haanel, Robert Collier, Elbert Hubbard, William Crosbie Hunter, Harry A. Lewis, Florence Scovel Shinn, George Matthew Adams, Genevieve Behrend, Elizabeth Towne & Ralph Waldo Trine
Wallace D. Wattles, William Walker Atkinson, P. T. Barnum, Benjamin Franklin, Orison Swett Marden, James Allen, Russell Conwell, Henry Harrison Brown, Thorstein Veblen, Emile Coué, Kahlil Gibran, Marcus Aurelius, Niccolò Machiavelli, Lao Tzu, B. F Austin, Charles F. Haanel, Robert Collier, Elbert Hubbard, William Crosbie Hunter, Harry A. Lewis & Florence Scovel Shinn
Niccolò Machiavelli, Elbert Hubbard, James Allen, William Walker Atkinson, Orison Swett Marden, Benjamin Franklin, William Crosbie Hunter, Harry A. Lewis, Thorstein Veblen, Kahlil Gibran, P. T. Barnum, Marcus Aurelius, Wallace D. Wattles, Lao Tzu, Russell Conwell, Henry Harrison Brown, Florence Scovel Shinn, Emile Coué, Charles F. Haanel, B. F Austin & Robert Collier
Niccolò Machiavelli, Elizabeth Towne, Elbert Hubbard, James Allen, William Walker Atkinson, Orison Swett Marden, Ralph Waldo Trine, Benjamin Franklin, William Crosbie Hunter, Harry A. Lewis, Thorstein Veblen, Kahlil Gibran, P. T. Barnum, Marcus Aurelius, Wallace D. Wattles, Lao Tzu, Russell Conwell, Henry Harrison Brown, Florence Scovel Shinn, Napoleon Hill, Emile Coué, Charles F. Haanel, B. F Austin, Robert Collier, George Matthew Adams & Genevieve Behrend
Niccolò Machiavelli, Elizabeth Towne, Elbert Hubbard, James Allen, William Walker Atkinson, Orison Swett Marden, Ralph Waldo Trine, Benjamin Franklin, William Crosbie Hunter, Harry A. Lewis, Thorstein Veblen, Kahlil Gibran, P. T. Barnum, Marcus Aurelius, Wallace D. Wattles, Lao Tzu, Russell Conwell, Henry Harrison Brown, Florence Scovel Shinn, Napoleon Hill, Charles F. Haanel, B. F Austin, Robert Collier, George Matthew Adams, Genevieve Behrend, George Long, W. K. Marriott & Emile Coué
Niccolò Machiavelli, James Allen, William Walker Atkinson, Orison Swett Marden, Benjamin Franklin, Thorstein Veblen, Kahlil Gibran, P. T. Barnum, Marcus Aurelius, Wallace D. Wattles, Lao Tzu, Russell Conwell, Henry Harrison Brown & Emile Coué