It's a vector map zoomed to 1:24k. If that's what the OP needs then it's the scale that matters and not the source. I'm not saying the USGS 7.5' minute map is better than other options but just that it's a specific description. He may want to display digitally as close as possible to what his friend is used to seeing on printed quads.
It would be quite a lot easier IMO to put third party maps on a Garmin (like I say, I really like the GMapTools ones) if the data sources (such as OSM) and details are acceptable.
Just an example, this from those topo maps from GPS File Depot. It's the Garmin IMG generated from several sources, TIGER data, land usage, etc. It's not a great example simply because all the data agree at this scale, so just highlights the way the maps are formatted more than anything.
The same spot from the most recent 7.5' quad there (the "S B Point, AZ 2018" quad), which is generated by the USGS. The Avenza PDFs are just these displayed, so it's a lot of files to achieve the desired outcome. When quads are displayed on Gaia and Caltopo they've remove borders and made the tiles seamless.
https://ngmdb.usgs.gov/topoview/viewer/#15/36.3073/-112.7644
Taken from this quad:
And this is the scanned 7.5' paper version, from 1988 I think, for historical reference.
