Gretta sent me name of a couple more sources for organic open pollinated seeds:
High Mowing Organic Seeds (located in Wolcott, VT)
Turtle Tree Seed

And here’s a link to a newly started seed company that is using a tomato photo of mine on their banner! (it was properly licensed – thanks Mike)
Ohio Heirloom Seeds

I’ll add these and companies contributed in the comments section to my previous post, which I’ll put near the top of my side bar.