Section 1-18 (page 24) of the linked PDF has examples of the "National Forest", "National Monument", etc. logotype; Chapter 8 has some more signage specs.
There are a few more cousins of these from the HP Lovecraft Historical Society at https://store.hplhs.org/products/hplhs-fonts
I have my own shortlist of long-time favourites. To name but a few: Gentium Book Basic is a delight to read in print; Titillium adds a nice touch to technical drawings; Hack traces its monospaced code font lineage back to Bitstream Vera (through DejaVu Sans Mono), which back then kicked off a whole new period of free software desktop look-and-feel.
But I've never really found a site that collects these free software licensed fonts with curated reviews and use-cases. Sites like FontSquirrel offer a rough index, but contain no easy way to filter on more complex queries, and don't really show each typeface's strengths and weaknesses.
Does such a site or community exist?
There are also some more opinionated FOSS font forges like https://www.theleagueofmoveabletype.com/ and (slightly bizarre) https://www.velvetyne.fr/
There's not much out there, I'm afraid. It looks like you're already aware of the sites that just list a million fonts and maybe let you try out rendering some sample text interactively. You might find sites like Typewolf and Fonts In Use interesting if you haven't come across them before. There's a little more curation and organisation there than on something like Google Fonts. But really, for free fonts, there's not a lot of detailed commentary in my experience. If you have specific questions or want advice about suitable fonts for a specific project, you could also ask on the Typography subreddit, which is fairly active and has a few people who know what they're doing around.
And many in-depth discussions like
https://praegnanz.de/weblog/gentium or https://praegnanz.de/weblog/cardo
It doesn't have many fonts at the moment but feel free to open an issue with any font requests and I will add it to the site: https://github.com/kiwicopple/quick-font/issues
This is basically the Roman Simplex font used in CAD packages, and included in the 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.
"National Park Service Typefaces" https://www.nps.gov/subjects/hfc/nps-typefaces.htm
N A T I O N A
P A R K
Now the "Download" at the top, he's got some explaining to do...
(Agree with your point about expert web dev. Someone who designs fonts =/ someone who designs websites. Totally different skills. Some people might do both, but assuming that would be rather bold)
Microsoft got this one right when they released free Windows VMs for various combinations of Windows and IE versions.
Now, yes, it's fairly likely OP is already using macOS and they just didn't bother testing Safari, but if you want to be snarky about browser testing, be snarky to Apple first. They're intentionally making it difficult to test in Safari.
There are others just the first I found.
An excellent choice. Wish other firms would follow the same policy when building on public sector work.
That's trivial though; you use a path with a circular pen, a most rudimentary thing in 2D graphics.
Looking at it I feel that I could make something like it, even though I haven't done it before, simply by putting in the required time. (This is not some idle thought; I definitely do not feel that way about any other font I've seen in the last 20 years.)
It has nothing but straight lines and rudimentary curve segments and arcs, using a fixed stroke width with rounded ends.
There seems to be no attention to kerning, so chances are I wouldn't have to learn anything about that topic to make a font like this.
The kind of variation seen here among the multiple styles and weights looks like something that can be cranked out by varying some generic global parameters.
(Even then, you’d still need to have the stroke data, which seems like the hard part?)