This is a scoping question. I'd like to ask a question that initially seems like something more suitable for ELU, but is really about the history of printing.
Specifically, whether/how early printers (specifically German) contributed to English abandoning the letter thorn (Þ) for voiced and unvoiced th: Initially replaced with y, (thus we get ye olde Historie Stack) and eventually with just th. I also want to ask about whether early English printers might have cast their own type (e.g. thorn blocks).
Is such a question appropriate here? If not, what's your best guess for whether it's better for ELU, or somewhere else?