. Jalbum 8.1 slides/M01.html Tue, 17 Mar 2009 11:03:20 -0700 Simple Weather Map M01 Simple Weather Map M01 slides/M01.JPG slides/M02.html Tue, 17 Mar 2009 11:03:20 -0700 Simple US weather map. Simple US weather map. slides/M02.JPG slides/M06.html Tue, 17 Mar 2009 11:03:20 -0700 An early Signal Service weather map. Dated September 1, 1872 Careful compilation and study of these maps led to scientific forecasting. In: "Daily Bulletin of Weather-Reports ... for the Month of September, 1872. Credit Code: NWS. An early Signal Service weather map. Dated September 1, 1872 Careful compilation and study of these maps led to scientific forecasting. In: "Daily Bulletin of Weather-Reports ... for the Month of September, 1872. Credit Code: NWS. slides/M06.JPG slides/M12.html Tue, 17 Mar 2009 11:03:20 -0700 slides/M12.JPG