"Dr. Thomas's book . . . is the result of extensive research in Madrid archives, and reveals a detailed familiarity with both the technical and the financial side of printing. The more statistical results of her researches are reproduced in two lengthy appendices: A) Book Trade Personnel, and B) Expenditure and Production. Both of these will be of great interest to researchers on the activities and output of Madrid printers during the important period covered by the study."—The Library