Would anyone know of a good commerical or government source for free cloud charts (you know, the kind that one sees hanging up in a flight school or science classroom from time to time)?
Try NWS near you
I do remember AC Delco or Champion spark plugs used to put one out years ago
Here is the PDF version of a cloud chart from the NWS
http://www.arh.noaa.gov/brochures/docs/CloudChart.pdf
It's used in the NWS Southern Region "Jetstream" online weather school here:
http://www.srh.weather.gov/jetstream/synoptic/clouds_max.htm
Jetstream has another cloud chart here:
http://www.srh.noaa.gov/srh/jetstream/synoptic/clouds.htm#skywatcher
Clicking on a cloud picture in both of the previous two links brings up details about the cloud type.
Here's the story behind the latter chart.
http://www.srh.noaa.gov/skywatcher.htm
And the commercial original source of this chart.
http://www.forspaciousskies.com/
Mike