Robert Ingersoll exemplified the worst in Skepticism today, as one who delivered simple-minded "reader response" judgments. Many wrote responses to him in his own day, and we'll be looking to provide these. For now these are mostly references with just a couple of active links. ("Whinger," by the way, is an Aussie way of saying "whiner.")

• Science and Religion. Spirit Lake Beacon, October 6, 1881.

• Ingersollism exposed. Ottumwa, Iowa, Daily Democrat Print, 1882. 8 pp. 22 cm. OCLC: 74330875

• Lying made easy: a reply to Col. Ingersoll's "Mistakes of Moses" and "Skulls," being a defense of the Bible; a lecture delivered at Haverly's Theater, Chicago, Sunday, April 27, 1879. Chicago, A.B. Case & Son, printers, 1879. 15 pp. 22 cm. OCLC: 44180713

• Answer to Ingersoll. Comment in Wisconsin Register.

• Ingersoll Unmasked: A Scathing and fearless expose of his real life. Lexington, Ky.: Blue Grass Printing Co., 1900. 121 p. ; 17 cm. OCLC: 8959154

• The Age of Unreason; Being a reply to Thomas Paine, Robert Ingersoll, Felix Adler, O.B. Frothingham, and other American rationalists . New York: Martin B. Brown, 2nd ed. 1881, ©1880. 115 pp.; 19 cm.

• "Thy Word is truth." An Answer to Robert Ingersoll's charges against Christianity. 30+ pp. 18 cm. OCLC: 14067425
• Ingersoll under the Microscope. Col. R.G. Ingersoll's reckless misstatements exposed and his mental and moral characteristics analyzed. New York, Hunt, 1892. 36 pp.

• Ingersollism brought face to face with Christianity: Two sermons. Wilmington, Del.: James & Webb Print. and Stationery Co., 1881. 47 pp.; 24 cm. OCLC: 51043568

• The Religion of the Bible. Col. Robert G. Ingersoll answered ... . New York, Printed for the author, 1889. [1 v.] OCLC: 44477621

• Ingersoll dissected, in his doctrine. Chicago, Newth & Courtney, 1881. 44 p. OCLC: 20729055

• Ten Points of Ingersollville, including replies to all of Mr. Ingersoll's lectures. Chicago, Rhodes & McClure, 1879. 47 p., port.

• Ingersoll and Moses: A Reply, with notes and appendices. Chicago: Jansen, McClurg, 1880, (c)1879. 118 pp.; 19 cm.

• The Latest infidelity: a reply to Ingersoll's positions. Richmond, Presbyterian Committee of Publication, 1890. 68 pp. 16 cm. OCLC: 4623864

• A Jaw-breaker for Ingersoll, and his infidel confederates. Solomon City, Kansas, "Sentinel" Print., 1882. 60 p. 15 cm. OCLC: 32612045

• Did man make God or did God make man: A reply to Robert G. Ingersoll. Indianapolis : F. Caldwell, 1898. 100 p., [1] leaf of plates: port.; 17 cm. OCLC: 15133553

• The Mistakes of Robert G. Ingersoll, on nature and God. Boston: Beacon Press, 1881. 37 p.; 23 cm. OCLC: 24766937

• An Open letter to Col. R.G. Ingersoll. Toronto: Scott & Jopling, 1880s. Canadian ed. 32 p.: port. ; 22 cm. OCLC: 24114557
• Influence of Ingersoll. The North American review. / Volume 169, Issue 514, pp. 322-328. University of Northern Iowa, Cedar Falls, Iowa, etc., September 1899.

• A Woman's battle with Bob Ingersoll. Cincinnati, Ohio: Printed for the Author, 1893. Archival Material 23, [1] p. ; 17 cm. OCLC: 52146969

• Colonel Ingersoll on Christianity. The North American Review. Volume 146, Issue 378, pp. 481-509. University of Northern Iowa, Cedar Falls, Iowa, etc., May 1888.
• Mr. Gladstone in Defence of Christianity. From The Pall Mall Gazette (London, England), May 16, 1888; Issue 7227.
• The Ingersoll-Gladstone Controversy on Christianity: Two articles from the North American Review. New York: C.P. Farrell, 1898. Only authorized and correct ed. p. 107-189 ; 21 cm. OCLC: 8351266

• Ingersoll answered; Rev. William Gleeson's lecture in reply to Robert Ingersoll, delivered in Metropolitan Hall, San Francisco, Cal., Monday, Sept. 22, 1884. Also Rev. Henry A. Brann's Answer to Ingersoll's rationalistic absurdities. San Francisco, 1884. 23 p. 22 cm. OCLC: 19213040

• Christianity and Infidelity tested by their fruits: A Sermon preached in reply to Mr. Ingersoll's eulogy on Thomas Paine. Chicago: Advance Pub. Co., 1880. 35 pp.; 17 cm. OCLC: 23199281

• Shakespeare versus Ingersoll. Cincinnati, Ohio: Western Tract Society, 1889, (c)1888. 43 p.; 18 cm. OCLC: 5662555

• Ingersoll's Mistakes of Moses exposed and refuted. Saint Paul: Dispatch Job Printing Co., 1896. 158 p.; 23 cm. OCLC: 23225650

• Incompetent Ingersollic Ingenuity

• What Must we do to be saved, or, Paul against Ingersoll: the question beautifully answered from the Orthodox standpoint .... Jamestown, N.Y.: Chautauqua Democrat Print., 1881. 19 p.: 1 port.; 21 cm. OCLC: 41296886

• Reason vs. revelation from the fulcrum of the spirit philosophy, a reply to Robert G. Ingersoll. New York, Press of J.J. Little & Co., 1888. 146 p. 20 cm. OCLC: 38137587

• Robert G. Ingersoll, --a criticism. 11 p. ; 21 cm. S.l. : s.n. OCLC: 10365743

• Famous Answers to Colonel Ingersoll. Denver: "Colorado Catholic," 1892. 8th ed. xxviii, 188 p.; 17 cm. OCLC: 10758442
• Notes on Ingersoll. Buffalo, N.Y., Buffalo Catholic Publication Co., 7th ed., 1884, (c)1883. ix, 11-203, iv p. 20 cm. OCLC: 6064277
• Tactics of Infidels. Buffalo: Peter Paul & Brother, 1887. 357 p.; 18 cm. OCLC: 2363735
• Rev. L.A. Lambert, LL. D. versus Col. R.G. Ingersoll, The Christmas sermon of the noted infidel dissected by the eminennt doctor. Cleveland: Universe Pub., 1800s. xxviii, 216 p. : ill. ; 16 cm. OCLC: 2478777

• Invention in Ingersoll's lectures on religion. Thesis/dissertation/manuscript, Graduate College of the State University of Iowa, 1939. Archival Material iv, 209 leaves ; 28 cm. OCLC: 33368868

• Magnificent Reply to Col. Robert G. Ingersoll's attack on the Bible. New York, Religious newspaper agency, 1879. 12 p. 23 cm. OCLC: 29966642
• Robt. G. Ingersoll's attack on the Bible. Christian pamphlets. Vol. 14. United States: s.n., 1859-1878. In: Making of America.

• Letters to Goliath of Gas: Better known in modern times as Robert G. Ingersoll. Nashville: Pub. House of the M.E. Church, South, 1890. 155 p.; 19 cm. OCLC: 10628372

• The Bible Defended and atheism rebuked: reply to Robert G. Ingersoll's lectures "Mistakes of Moses," "Skulls, etc.", "What must we do to be saved?", etc.. New York : E.J. Hale, 1881. 142 p. ; 19 cm. OCLC: 24196943

• The Mistakes of Ingersoll. Cincinnati, O., Curts & Jennings, 1898. 344 pp. 19 cm. OCLC: 504141

• Letters addressed to Col. Robert G. Ingersoll, or, Infidelity rebuked and truth victorious. Philadelphia: P.W. Ziegler & Co., 1882. 232 pp.: port. ; 20 cm. OCLC: 10115947

• Mistakes of Modern infidels, or, Evidences of Christianity: comprising a complete refutation of Colonel Ingersoll's so-called mistakes of Moses, and of objections of Voltaire, Paine, and others against Christianity. New York: J.E. Potter, 1895. 4th edition, revised and corrected. 432 pp.; 21 cm. OCLC: 10453373

• Ingersoll Answered from the Bible; and, Ingersoll against himself: being a refutation of infidelity, in defense of the word of God. Utica, T.J. Griffiths, 1888. 2nd ed., rev. 236 p. OCLC: 5522732

• Ingersoll Answered: What must I do to be saved?. New York : I.K. Funk, 1881. 28 p. ; 23 cm. OCLC: 5128519

• Robert G. Ingersoll: The Great Agnostic. Apologetics Press :: Reason & Revelation. December 1994 - 14[12]; pp. 93-94.

• God out and man in: or, replies to Robert G. Ingersoll. Rochester, N.Y. : Steele & Avery, 1883. xi, 320 p.; 19 cm. OCLC: 22464232

• Reply to Colonel Ingersoll's "What shall I do to be saved.". London, Simpkin Marshall & Co. 46 p. 14 cm. OCLC: 39535082

• The Infidel boomerang tested: or A review of R.G. Ingersoll's printed lecture: "What shall we do to be saved?". [Tussy, I.T.?] 1902: Microform 2 p. l., 58 pp. 20 cm. OCLC: 24566919

• Ingersollism in its true colors; or, A familiar conversation between a young graduate and his aged uncle: showing the true inwardness of Ingersoll's teachings and their pernicious effects on American society. Buffalo, New York, Buffalo Catholic Publications Co., 1886. 82 p. 15 cm. OCLC: 44696543

• Infidelity Disarmed. Subtitle: In a reply to lectures by America's leading infidel orator, Col. Robt. G. Ingersoll : with a review of essays and articles by "George Eliot," Dr. Millicent W. Shinn, and Drs. Eby, Courtice, and Rev. G.S. Bland, B.A. : also a criticism of Dr. Workman's "Messianic prophecy," and his "Old Testament vindicated", the latter (chiefly in verse) including a criticism of Dr. Goldwin Smith's "Guesses at the riddle of existence," and his "Other essays on kindred subjects" Toronto: For sale at the Methodist Book Room, 1900. 255, 60 p., [1] leaf of plates: ill. ; 22 cm. Reproduction: Microfiche./ Chicago :/ American Theological Library Association,/ 1985./ 1 microfiche; 11 x 15 cm. OCLC: 16460903

• Lecture by ex-Senator T.W. Tipton, on Ingersoll's "Government of the United States without a god," unmasked. Lincoln: Journal Co., 1882. 21 pp.; 22 cm. OCLC: 43167727

• "Ghosts," Father Walworth's reply to Robert G. Ingersoll: a lecture delivered at St. Mary's Church, Albany, January 20, 1878. Albany : Times Co. Print., 1878: 12 p. ; 23 cm. OCLC: 39681325

• The Bible Defended: A Review of Thomas Paine's "Age of Reason" and R.G. Ingersoll's "Mistakes of Moses," "Lecture on skulls," etc.: with ample quotations from both infidel and Christian writers: Being an answer and rebuke to infidel questions and atheistic assertions. Boston: H.L. Hastings, 1888, (c)1887. 339 pp.; 19 cm.

• Extract on Ingersoll in The Art of Cross-Examination.

• Another Letter to Mr. Ingersoll. Detroit, Mich.: C.M. Woodruff, 1888: 32 p. ; 19 cm. OCLC: 24112885

• Infidels Moore and Ingersoll Unmasked. Lexington, KY: J.L. Richardson & Co., 1908. 104 p.; 18 cm. OCLC: 23465452. Available only at Christian Theological Seminary Library (IXT) and Disciples of Christ Historical Society (TND) in Indiana.