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    Re: Determining Elevation with an Altimeter
    From: Jared Sherman
    Date: 2002 Mar 1, 00:31 -0500

    Ummm...not to be a party pooper, but there is a web site (USGS?) that lists 
    all USGS benchmark sites and their latest recorded positions along with any 
    adjustments noted. You can interogate the site by giving it a lat/lon box and 
    asking for a list of any benchmarks in it, so it may be possibly to simply 
    locate a nearby benchmark and confirm the elevation and survey date. There 
    will be notes about the map datum and vertical offset as well.
    I think someone from this list had originally given it to me, I can't seem to locate it right now.

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