https://s3.amazonaws.com/omeka-net/36717/archive/files/44e629579aa33f1197d1bd44de7cc93d.JPG?AWSAccessKeyId=AKIAI3ATG3OSQLO5HGKA&Expires=1551713315&Signature=MjnqaasoKZMIpwbCv6dB9eo1wpw%3D

Media

Part of "Cary-Gould type" Pocket Microscope