Collection of early microscope drawings from various sources selected by BibliOdyssey.
Picryl description: Public domain image of a chamber, cell, interior, underground vault architecture, free to use, no copyright restrictions.
Public domain image related to President Abraham Lincoln, gelatin silver print, free to use, no copyright restrictions image - Picryl description
Public domain illustrated book page scan, free to use, no copyright restrictions image - Picryl description
Public domain scan of print or book page depicting plant, botanical drawing, free to use, no copyright restrictions image - Picryl description