(2024-03-17, 10:33 PM)DAW89446 Wrote: I don't have a link; though you could probably find them online. For decades I used the original paper topo maps; but after I collected hundreds, adequate storage became an issue. I still have National Geographic TOPO! map software, with California, Nevada and Utah map sets on CD ROM for my old Windows Vista computer. Then I got a Windows 10 computer and found Google Earth (TOPO! is incompatible with Windows 8 on up). TOPO! used USGS mapsets, but were seamless, so you could go to one quad to another without interruption.
I imagine that I'm not the only one who still like paper maps! I did find the USGS map here (and seamless on CalTopo here; Base Layers > Scanned Topos). It states that it was "derived from aerial photographs taken" in 1976, "field checked" in 1981, and "photoinspected using imagery dated" 1996. I like the history that the older maps reveal (e.g. mines, old roads, etc.). The benchmark you pointed out earlier on those maps does not show on the newer 7.5 minute maps, but I guess it's still out there.