Barb,
An online resource that you may want to consult is the National Postal Museum's Arago site.
It looks like it would be useful in supplementing the Scott catalog descriptions with stamp images from the museum's collection.
The site also allows you to create a digital collection and email images.
You can access it at
http://arago.si.edu/Steve
p.s., And keep those posts coming -- I'm living vicariously through your finds!
