In this paper we describe ItLv (Interactive Timeline Viewer), a visualization tool currently used to depict the variants obtained in a textual collation. A textual collation is a process in which a base text is compared against several comparison texts to identify differences (variants) among them. The interactive options of ItLv provide different abstractions of a dataset by enabling the presentation and exploration of the relationships that exist within the dataset. Applying ItLv to the dataset resulting from a collation therefore helps understand the relationships among the texts. The example dataset used in this paper is a collation of six early editions of Cervantes’ Don Quixote.