On the Tuesday, a little over 10 years ago, Richard posted a CdS blog entry:
http://richardspooralmanac.blogspot.com/2010/03/drawing-mostly-accurate-map.html
related to the first Sunday strip, published roughly 2½ years earlier
https://www.gocomics.com/culdesac/2007/09/16?comments=visible
On the Tuesday, a little over 10 years ago, Richard posted a CdS blog entry:
http://richardspooralmanac.blogspot.com/2010/03/drawing-mostly-accurate-map.html
related to the first Sunday strip, published roughly 2½ years earlier
https://www.gocomics.com/culdesac/2007/09/16?comments=visible