https://s3.amazonaws.com/omeka-net/36717/archive/files/cb87bb693c970a0973a339fc646aa36e.JPG?AWSAccessKeyId=AKIAI3ATG3OSQLO5HGKA&Expires=1551713319&Signature=CyJqlspaPw%2BiHprmc%2FIwPxOAoTE%3D

Media

Part of Charles Baker "Ross Type" Microscope