Abstract
The approach followed for the identification and the implementation of visualization diagrams able to support the knowledge acquisition on Dante's works is described. Two high-level structures and an implementation model are proposed. An example of citation histogram is given; one of its possible refinements is considered. The chapter is part of the Towards a Digital Dante Encyclopedia, a three-year Italian National Project which aims to build a digital library endowed with services to support scholars in creating, evolving, and consulting an encyclopedia on Dante Alighieri and on his works.