Das Triumphirende Perpetuum Mobile Orffyreanum (The Triumphant Orffryrean Perpetual Motion)
- Kassel, 1719

Maschinen Tractate (Treatise on Machines)
- Kassel, 1722 (ordering information)

excerpt:

"Further demonstrations regarding the possibility and impossibility of perpetual motion.

NB. May 1, 1733. Due to the arrest, I burned and buried all papers that prove the possibility. However, I have left all demonstrations and experiments, since it would be difficult for anybody to see or learn anything about a perpetual motion from them or to decide whether there was any truth in them because no illustration by itself contains a description of the motion; however, taking various illustrations together and combining them with a discerning mind, it will indeed be possible to look for a movement and, finally to find one in them."

- Johann Bessler, first page of Maschinen Tractate