| title | media type | ISBN-13 | year of publication |
|---|---|---|---|
| A Few Reasons for Doubting the Inspiration of the Bible | Paperback | 978-1-57884-950-5 | 1997 |
| Challenging the Bible: Selections from the Writings and Speeches of Robert G. Ingersoll | " | 978-1-932968-26-2 | 2005 |
| Complete Lectures of Col. R. G. Ingersoll | " | 978-0-318-16675-9 | 1990 |
| God: Hit or Myth? | " | 978-0-9771489-0-5 | 2006 |
| Lectures Of Col. R. G. Ingersoll - Latest | Hardcover | 978-1-4142-3836-4 | 2005 |
| Lectures Of Col. R. G. Ingersoll - Latest | Paperback | 978-1-4142-3837-1 | 2005 |
| Orazioni di un miscredente | Copertina rigida | 978-88-85140-87-5 | 2008 |
| Reason, Tolerance and Christianity | Paperback | 978-0-87975-851-6 | 1993 |
| Some Mistakes of Moses | " | 978-0-87975-361-0 | 1986 |
| The Best of Robert Ingersoll: Selections from His Writings and Speeches | " | 978-0-87975-209-5 | 1993 |
| The Works of Robert G. Ingersoll, Vol. XII | " | 978-1-60520-898-5 | 2009 |
Col. Robert Green Ingersoll · R. Ingersoll · Robert G. · Robert Green, Col. Ingersoll · Robert Green Ingersoll · Robert Ingersoll
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