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- Carte audioLectures of Col. R.G. Ingersoll, Volume 2Robert G. Ingersoll
- Carte audioMistakes of MosesRobert G. Ingersoll
- Carte audioSelected Interviews with Robert G. Ingersoll, Volume 2Robert G. Ingersoll
- Carte audioThe Works Of Robert G. Ingersoll, Volume 4Robert G. Ingersoll
- Carte audioSelected Interviews with Robert G. Ingersoll, Volume 1Robert G. Ingersoll
- Carte audioLectures of Col. R.G. Ingersoll, Volume 1Robert G. Ingersoll