This article looks into UPenn LJS 55, a French thirteenth century manuscript composed of four different works that exemplify the Encyclopedic drive of the time: Gossuin de Metz’s Image del monde, Honorius Augustodunensis’ Elucidarium, in an anonymous French prose version called Lucidaire, a Moralités des Philosophes in prose and an unidentified fourth text. By analyzing the collation of the manuscript, this article suggests that two of the eight quires that are comprised in the manuscript are incomplete, leading to the creation of a new collation model and the identification of the fourth piece as Aldobrandino da Siena’s Régime du corps. Finally, the analysis of the corrections in Metz’s text will help classify the Image del Monde in LJS 55 as verse, not prose.