Tried to post this earlier but it did not show up, so will repeat. Stationary Safety Glass for the Rear Doors and Rear Quarter Panels were optional at a princely sum of $45.00 extra. They became available during April, 1936. This per a Green Island NY Branch Service Letter. The Glass mounted into separate channels which were held on by screws, and were not adjustable. You had to remove this optional equipment should you decide to use the regular curtain equipment. Part number of this optional stationary glass equipment was SE68-793700, and could also have been installed by the Ford Dealer.
Lincoln.