Bifocal lens posters & prints

Benjamin Franklin, American scientist, inventor and statesman, late 18th century Unknown

Benjamin Franklin, American scientist, inventor and statesman, late 18th century Unknown

Benjamin Franklin, political figure and statesmen of the United States Gordon Ross

Benjamin Franklin, American scientist, inventor and statesman, late 18th century Unknown

Lens fiber of a rabbit eye Anonymous

Long focal length refracting telescope, 1728 Unknown

Lens fiber of a rabbit eye Anonymous

Advertisement for Contact Lenses Anonymous

The Battle of Smolensk Jean-Charles Langlois

Trifolium Suffocatum; Dense-Flowered Trefoil Anonymous

Trifolium Suffocatum Dense-Flowered Trefoil Anonymous

Indocalamus latifolius (bamboo) - shoot Anonymous