For those who inquired, I found a nice little web page that tells a bit about ornamental gourds. The American Gourd Society, which I didn't even know existed until I went looking for specific gourd information, has more information than I ever knew to ask anyhow.
For those who simply want to cut tot he chace, Chart O'Gourds has most of the gourds I purchased on it. The only ones I didn't buy were the broad stripes, and that was because there weren't any for sale.
It might be fun to plant a few gourd vines next year in my garden. Pity I have such limited space.