52 Cameras: Thornward Dandy No. 5
Channel: 52 Cameras
Date: 2020-05-18

Expand the description for links with information I used.
More will be at: http://exit272.com/?p=5876

Sources & mentions in the video:

Label & strut pictures. And quite a collection:
http://dtristramludwig.com/collection.html

1905 Montgomery Ward catalog:
http://www.piercevaubel.com/cam/catalogs/1905wardslp096.htm

Wollensak Junior info & 1903 catalog:
https://alphaxbetax.com/Wollensak%20Lens%20and%20Shutter%20Compendium/#Junior

1912-1913 Wollensak Lens and Shutter Catalog:
https://alphaxbetax.com/wollensak-catalogs-etc/

Aperture, f-Stops, and the U.S. System:
http://throughavintagelens.com/2010/01/the-u-s-f-stop-system/