I can’t help you out, but those windows are sweet. Just when I thought I saw everything. Is the key part missing on all of the windows?

@toddinmn Unfortunately! I have the bottom track but not the top portion. I am not quite sure how those little metal bits sit in the top track.

@suedonim75 Thanks! I appreciate it. It's not totally clear in those diagrams unfortunately. I'm still hoping they exist in someone's home! Fingers crossed...

I have windows similar to that in my 1960s house.

Reach out to these guys. If anyone has access to or has the parts it is them.

https://www.blainewindow.com/

@millworkman Thanks! I will check that out. I luckily found a few people to send photos of the windows and how they were built. Still working on making parts and installing them.

Have you had luck restoring them?

@D P not yet! We need to rebuild the entire window, we only have the original bottom track.

We have those exact windows

We have those exact windows!