Opera medicinalia. Ed: Peregrinus Cavalcobovis, with a preface by Nicolaus Gupalatinus. Consisting of: Canones universales. De simplicibus. Grabadin. Practica.

This undated edition, which the ISTC im00508000 catalogues as "not before 18 May 1471", may be the earliest printed edition of the writings of the medieval Persian or Assyrian Nestorian Christian physician Yuhanna ibn Masawaih, whose name was also written Ibn Masawaih, Masawaiyh, and in Latin Mesue, Masuya, Mesue Major, Msuya, and Mesue the Elder. Another edition of Mesue's Opera medicinalia, for which there is a definite publication date, appeared in Padua on 9 June 1471 (ISTC no. im00509000). The two editions printed in 1471 were the first printed editions of any works by Mesue.