[jinnyto]

You're very welcome! So happy to discuss and share all this together, such an underrated topic in my opinion... Looking forward to your next update.

This whole thing has got me going down the rabbit hole of looking at different countries' archives, here are some from the United States (also in 1889 for the fun of comparison):

- Progress Map for 1889, Cape Fear River Below Wilmington, North Carolina: https://catalog.archives.gov/id/518257160?objectPage=2 - Statistics relating to the Canal around "The Cascades," Columbia River Falls https://catalog.archives.gov/id/501103295?objectPage=2

I tried looking at the British and Irish national archives but couldn't find online images/PDFs of maps and charts, seems like they're for in-person consultation only.

And one more French one from 1906 for kicks because it's so ambitious. Years + bars per year, mapped onto Paris, per company, then split into 2 views (total passengers vs. average passengers per kilometre). Wow. Mouvement de la circulation à l'intérieur de Paris、1860-1900 (map from 1906): https://gallica.bnf.fr/ark:/12148/bd6t5253796z/f81