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Portrait of Robert G. Ingersoll

Robert G. Ingersoll books in order

American lawyer, orator, and politician

Lived
1833–1899
Country
United States
Books
7

Robert G. Ingersoll published 1 novel, 3 non-fiction books and 3 other books, beginning with The Gods, and Other Lectures (1874). The best-known is Orthodox Theology (1880).

Updated September 2026

Where to start with Robert G. Ingersoll

Standalone novels in order

  1. Some Mistakes of Moses (1879)

    270 pages

    Buy

Non-fiction in order

  1. The Gods, and Other Lectures (1874)

    253 pages

    Read free

  2. Abraham Lincoln (1893)

    100 pages

    Buy

  3. Colonel Robert G. Ingersoll's 44 Complete Lectures (1924)

    411 pages

    Buy

Other books in order

  1. The Ghosts (1878)

    72 pages

    Read free

  2. The Liberty of Man, Woman and Child (1879)

    64 pages

    Buy

  3. Orthodox Theology (1880)

    Buy

Free to read

All free classics

About Robert G. Ingersoll

Robert Green Ingersoll, nicknamed "the Great Agnostic", was an American lawyer, writer, and orator during the Golden Age of Free Thought, who campaigned in defense of agnosticism.

Biography from Wikipedia, CC BY-SA 4.0. Photo via Wikimedia Commons.

Robert G. Ingersoll FAQ

How many books has Robert G. Ingersoll written?
Robert G. Ingersoll published 1 novel, 3 non-fiction books and 3 other books that we list, as of September 2026.
What order should I read Robert G. Ingersoll's books in?
Publication order is a safe choice; the full list is above. Most readers start with Orthodox Theology.
What is Robert G. Ingersoll's last book?
Abraham Lincoln (1893).
What is Robert G. Ingersoll's most famous book?
Orthodox Theology (1880) is Robert G. Ingersoll's most widely read book.
Can I read Robert G. Ingersoll's books for free?
Yes. 31 books by Robert G. Ingersoll are in the public domain in the US and free to read online or download here.

Authors like Robert G. Ingersoll

Sources: book lists and dates from Wikidata and Open Library, ratings from Open Library readers, free texts from Project Gutenberg. Last updated September 2026.