Nice photo but I wish the photographer would have set up the legs on the tripod even so I didn't have to put that book under one side of my screen.
Were the plastic rear windows really weak back then or did those cars haul rowdy kids?
According to the website below, the current material for top and side curtain clear windows, vinyl, wasn't invented until 1926. My assumption is that prior to that, the clear windows were made of cellophane, can anyone shed more light on the subject?
http://inventors.about.com/od/pstartinventions/a/plastics.htm
I few years ago I found about 30 glass windows for the T, I suspect they were an accessory. All sold a long time ago, I had one set on my 1917 touring.
http://www.ehow.com/about_6717706_isinglass-curtains_.html
It says that early on isinglass curtains were made from sturgeon and cod bladders!
How about that?
It also says that it could mean any transparent material that lets in light.