This article is about fallen sorts in some fifteenth century books of Lyons' public library including a unique case of multi-fallen-types. Studied for more than a century, these accidents are rare and teach us some information about types used by the first printers. We can see the imprints of one on the oldest types of Lyons in an exemplar of the Sermones of Robert Caracciolus printed around 1479. The clear mark allows to define the dimensions and to notice a hole. More singular is the exemplar of the Virgil's Opera printed in Lyons by Antoine Lambillon in 1492 and today in the public library of Lyons. On one of its page, we can see not one but five types' marks side by side. In fact, a whole word fell in the external margin of the page and upsets two others words around which disappear. Such a disorder seems to be the only one known today. Stayed together, the types are in a strange position which is not usually seen. This article proposes a thorough description of imprints left by the fallen types and suggests some proposals on the way it happened and on the information which we can learn from these situation. It could be, among others, an evidence that types were tied together in the first times of printing.