https://s3.amazonaws.com/omeka-net/36717/archive/files/7406a4877ea6e1d781813a46254baaab.JPG?AWSAccessKeyId=AKIAI3ATG3OSQLO5HGKA&Expires=1551713315&Signature=1WzvxmwTa8Hpd7K2jPd%2BGOS50EU%3D

Media

Part of "Cary-Gould type" Pocket Microscope