Includes bibliographical references (p. 246).

Vienna, Austria, National Library of Austria -- Admont, Austria, The Benedictine Abbey Library of Admont -- Ulm, Germany, The Monastic Library at Wiblingen -- Metten, Germany, The Benedictine Abbey Library of Metten -- Wiemar, Germany, The Herzogin Anna Amalia Library -- Rome, Italy, The Vatican Library -- Florence, Italy, Riccardiana Library -- Paris, France, The Mazarine Library -- Paris, France, The Institute Library -- France, Paris, The Senate Library -- Chantilly, France, The Cabinet des Livres of the Duc d'Aumale -- Saint Gall, Switzerland, The Abbey Library of Saint Gall -- Oxford, England, Bodleian Library -- Cambridge, England, Wren Library, Trinity College -- Manchester, England, The John Rylands Library -- Dublin, Ireland, Trinity College Library -- Prague, The Czech Republic, The National Library -- San Lorenzo del Escorial, Spain, The Library of the Royal Monastery of El Escorial -- Mafra, Portugal, The National Palace Library in Mafra -- Boston, United States of America, Boston Athenaeum -- Washington, D.C., United States of America, The Library of Congress -- New York, United States of America, The New York Public Library -- Saint Petersburg, Russia, National Library of Russia.