https://s3.amazonaws.com/omeka-net/36717/archive/files/0a3f9843d43a332f1bc2ad3a28d67bcc.JPG?AWSAccessKeyId=AKIAI3ATG3OSQLO5HGKA&Expires=1551713315&Signature=3KFVE6gfy8IVq%2BFaxfeGbii8eUg%3D

Media

Part of "Cary-Gould type" Pocket Microscope