The is a great, extremely light, pocket atlas/set of maps for doing the John Muir Trail. I picked up Erik the Black's Ultralight trail guide for the JMT last summer for use on a couple of section hikes I was doing. The trail guide is only about 2.5 oz, very thin, and about the same dimensions as most paperback books available now days. Each of the maps in the guide include an elevation profile, information on camp and water locations along with a variety of other information useful during your hike… Full review
Blackwoods Press is a small publishing company located in the San Bernardino Mountains of Southern California. It designs and published maps, atlases, and information products tailored to the needs of lightweight backpackers and long distance hikers.