How did Europe's oldest political institution come to grips with the disruptive new technology of print? Printing thrived after it came to Rome in the 1460s. Renaissance scholars, poets, and pilgrims in the Eternal City formed a ready market for mass-produced books. But Rome was also a capital city--seat of the Renaissance papacy, home to its bureaucracy, and a hub of international diplomacy--and print played a role in these circles,...