[pct-l] Erik the Black's Maps: They're Excellent!!!

[Douglas P. Bouche]

Kathy:

If you are only hiking the JMT, you may want to consider the "Guide to the
John Muir Trail" by Winnett/Morey. I used it when I hiked the JMT last
summer, and it had pretty much everything I needed.

Doug

-----Original Message-----
From: pct-l-bounces at backcountry.net [mailto:pct-l-bounces at backcountry.net]
On Behalf Of Kathy Walter
Sent: Monday, January 31, 2011 4:39 PM
To: pct-l at backcountry.net
Subject: [pct-l] Erik the Black's Maps: They're Excellent!!!

I'm doing some planning for the JMT today and I'm looking at Erik the  
Black's Atlas, Wilderness Press's Data Book and Tom Harrison's maps  
and all three have different elevations for identical points, some by  
just a few feet, some by a couple hundred. Which source is considered  
most accurate? And out of curiosity, does anyone know how these folks  
arrived at their numbers? Are they all just out there with their own  
altimeters getting their own reads? I assumed there was an official  
source for this kind of information.
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