I've added about 40 entries to the Timeline of Music Notation. Mostly from the 1880s-1920s. And I've started adding links to image examples of the notations in the entries. https://twitter.com/Silpayamanant/status/1650438883908173827

I remember once in music theory, I asked my professor what musical notation in other cultures looked like. He asked what I meant, and I was like “well, obviously we standardized this at some point— so what did sheet music look like in non-European countries?” He did not know. https://twitter.com/imaginmatrix/status/1651800053256957952