https://s3.amazonaws.com/omeka-net/36717/archive/files/7281383fbb19a81e9f1ea7b8d4e27b40.JPG?AWSAccessKeyId=AKIAI3ATG3OSQLO5HGKA&Expires=1551713319&Signature=B8aerzu47n6HT8%2FHGzjfmsUuP%2B4%3D

Media

Part of Charles Baker "Ross Type" Microscope