had learned four important lessons: The Google Books database is an enormously powerful and valuable tool for researchers. Dates (and other items of metadata) provided by Google Books are sometimes inaccurate. When a book is reprinted it may be revised, and a revision may shift the date of publication. Precise details about editions must be collected. A book in the Google Books database that is only visible in snippets must be examined directly in hard copy to verify the quotation and to allow the construction of a complete and accurate citation. Idealistically,