The Seybert Commission

• Preliminary Report of the Commission Appointed by the University of Pennsylvania to Investigate Modern Spiritualism
• Preliminary Report of the Commission Appointed by the University of Pennsylvania to Investigate Modern Spiritualism In Accordance with the Request of the Late Henry Seybert
• Preliminary Report of the Commission Appointed by the University of Pennsylvania to Investigate Modern Spiritualism in Accordance with the Request Of
• Preliminary Report of the Commission Appointed to Investigate Modern Spiritualism