https://s3.amazonaws.com/omeka-net/36717/archive/files/326408d8a86ce2edb1643867d60cf236.JPG?AWSAccessKeyId=AKIAI3ATG3OSQLO5HGKA&Expires=1551713315&Signature=K9LO8RrA2Ytn3WQfZr4RRJhQS7Y%3D

Media

Part of "Cary-Gould type" Pocket Microscope