>I wouldn't expect them to match up.  I would, however, expect them to
>be skewed along the north-south direction.  It's a orthorectification
>and projection issue.  The DEM is probably projected in UTM and the
>topographic quadrangle is normally projected in state plane coordinate
>system.  The state plane coordinate system would be skewed the further
>north the map is located.  Part of the orthorectification problem is
>that they are made by two different independent departments within the
>USGS organization that don't talk to each other (and in fact there is
>a bit of a feud between them).
>  
>
    I don't know about the DEM, but I know for a fact that the Topo from 
TerraServer is UTM.  I deal with the topos and the aerial photography 
almost on a daily basis.

Tom

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