Glasses - Wikipedia
BBC - A History of the World - Object : Original bifocals
Watercolor Portrait Painting of Gentleman with Pince Nez by listed art — The Art of Antiquing
File:Unidentified woman in pince nez glasses, Ellensburg, Washington, ca 1901 (PORTRAITS 603).jpg - Wikimedia Commons
File:Anton Chekhov with pince-nez, hat and bow-tie.jpg - Wikipedia
Top 4 Victorian Era Eyewear Trends Rocked Fashionistas
Pince-nez - Wikipedia
Mary Wade Griscom - Wikipedia
File:Willson Goggles pince-nez angled on box.jpg - Wikipedia
1860' gold pince-nez, with wood case.