I have recently acquired two IBM Wheelwriters to convert into teletypewriters for my projects.
One of them especially caught my eye with its expansion connector. It seems that it could have a printer option card attached to it to make it operate as a printer according to what little information I could find about it.
I will have to hook it up to the logic analyzer to find out the transmission protocols before I can use it as a terminal for my other projects in the future. In the meantime, here is some pictures of the disassembly of the Personal Wheelwriter while I was cleaning It out:
