This is basically the Roman Simplex font used in CAD packages, and included in the Hershey fonts.
https://en.wikipedia.org/wiki/Hershey_fonts
Hershey and CAD fonts are stroke-based, so line weight and endcap style influence the appearance.
Here's a JSONized version as part of the textlines tool: https://github.com/wildsparx/textlines/blob/master/fonts.jso...
Of course CAD fonts can be used at different aspect ratios - Roman Simplex is often used at 0.85 and that may be what National Park captures.