Book (link to publisher)
429 pages
Level: high school and above

This book, written in Italian by Sabino Maffeo, S. J. and translated by George V. Coyne, S. J. (both of the Vatican Observatory), gives the history of the founding and development of the Vatican Observatory. From the web site of the current publisher, University of Notre Dame Press:

The Vatican Observatory: In the Service of Nine Popes records the history of the Vatican Observatory (Specola Vaticana). It was originally published in 1991 on the occasion of the 100th anniversary of the foundation of the observatory by Pope Leo XIII. This revised edition brings together many facts hidden in archival material, correspondence, previous publications on the observatory’s history, as well as fresh material derived from interviews. Of particular interest is new research on the difficult period in the observatory’s history as it moved from an institute struggling to establish research programs to a true astronomical observatory.

The Vatican Observatory: In the Service of Nine Popes presents the most complete written history of the Vatican Observatory.