I stated that I saw windows that feature custom-made pressed glass inclusions. I took some pictures recently at the St. Louis Art Museum, where there are a set of LaFarge windows originally from Boston.
Here are both windows together -
Hollyhocks on the left and peonies on the right
Closer in on the hollyhocks.
This is a pressed glass flower from lower right area of hollyhocks window.
Pressed glass flower from peonies window.
Another unique feature of the hollyhock window, a detail of a flower using no lead or copper foil - just a flow of solder between the pieces of glass.