High Sierra Topix

I found this screenshot of a map from a Kaweah Basin trip report online. I remember seeing this map at one point in a park store. National Geographic was of no help identifying it - the person answering their emails said they couldn't identify it! Here's the trip report: https://www.trailnamebackstroke.com/kaweah-basin

Any idea what book or map this was found in?

https://i.imgur.com/6gaEVOC.jpg

Thanks for any help.

I reached out to various stores at the National Parks, and turned up the answer - it's an Eric Knight map of the JMT:

https://www.ericknightmaps.net/jmt-zoom.html

www.fatmap.com is a satellite image based 3D mapping tool. If you are seeking a resource to create your own maps or study potential routes, on-trail or XC, check it out.

Ed