[PRCo] Re: Old topo map question

[Donald Galt]

Thanks, Derrick. With, of course, the usual tributes to your omniscience.

> > And does anybody have observations about CDs of such maps that are advertised
> > on eBay?
> 
> The claim "The Warfield and Williamson quads are not available anywhere 
> online." suggests they got the scans elsewhere.
> 

Okay. But (I'm looking at Ohio, not PA but close enough for the purposes of 
argument) the sheets offered by Pmtmate are identical to those found at Maptech 
in terms of edition and reprint dates, even where multiple editions are listed. 
Amazing coincidence - not.

I notice also that Maptech's overlaps between quarter-sheets are very, very 
wide. Adds to download time but reduces the need for pasting.

Don