- EbookThe Preparation of Illustrations for Reports of the United States Geological SurveyJohn L. Ridgway
- EbookThe Preparation of Illustrations for Reports of the United States Geological Survey With Brief Descriptions of Processes of ReproductionJohn L. Ridgway
- EbookThe Preparation of Illustrations for Reports of the United States Geological SurveyJohn L. Ridgway