Needless to say, staying inside and ordering fall seeds is the best way to spend a Saturday afternoon at this stage of the summer.
I found a lot of what I wanted at Rareseeds.com (also known as Baker Creek Heirloom Seed Co.). I've not ordered from them before - prices seemed more than reasonable.
Here's what I got:
Broccoli - Early Purple Sprouting
Broccoli - Romanesco Italia
Broccoli - Waltham
Beetroot - Golden Beet
Beetroot - Chioggia (Bassano)
Cauliflower - Giant of Naples
Parsley - Giant of Italy
Leek - Giant Musselburgh
Orach - Purple Passion
Swiss Chard - Fordhook Giant Chard
Spinach - Bloomsdale Long Standing
Sense any trends among these? Several "giants" and several purple-hued cultivars. Hmm.
Anyway, the 2006 Fall Seed List, regularly found in the righthand column, has been updated too, including pictures.