The John Muir Trail has now joined the Pocket Maps family!
The book consists of 1 overview map, 7 section overview maps, 7 section meta-data pages, 39 trail maps, 46 elevation charts and a 18 page data book with 383 locations. These are not old, scanned USGS topo maps.
For more info: https://www.postholer.com/maps/John-Muir-Trail/4