-------- Original Message --------
Subject:        Re: 1930ish US Coast & Geodetic Survey charts
Date:   Wed, 03 Jun 2009 12:21:26 -0400
From:   Edward James Redmond <[log in to unmask]>
To:     <[log in to unmask]>
References:     <[log in to unmask]>


Joel:

If the letters are in small font below the neatline in the lower left corner they may be correction dates.  There are, in some cases, "large corrections" and "small corrections" and references to the 'Notice to Mariners' updates.

John 'Chartman' Cloud will be happy to embellish.

Ed

MODERATOR NOTE: John Cloud does not subscribe to Maps-L



>>> Maps-L Moderator <[log in to unmask]> Wednesday, June 03, 2009 11:04 AM >>>
-------- Original Message --------
Subject:        1930ish US Coast & Geodetic Survey charts
Date:   Wed, 03 Jun 2009 10:46:45 -0400
From:   Joel Kovarsky <[log in to unmask]>
To:     Maps, Air Photo & Geospatial Systems Forum <[log in to unmask]>



I am cataloging a few of these charts, and they are a good bit later
than things I usually handle. I was wondering about the entries often
seen in the left lower margins, often with a format such as "43-1/3;
45-12/9",  etc. I gather someone on this list knows what those printed
numbers mean, so I thought I'd ask. Most of the variants I'm seeing are
not currently in WorldCat, but even for similar charts that are, those
marginal numbers are not often listed

Thanks in advance for any help..

         Joel Kovarsky