Mike, Reid's indeed is OP and still available via Shumway's. It's been around since 1847 and was a hybrid cross between a late red dent corn and an early white flint variety. Definitely one of the older ones that are still around.
Shumway's is carrying 9 different field corns. One offer is for all 9 in 2-ounce or half pound packages. A bit pricey but you could try all 9 and see which you like best.
I just received a Shumways magazine (thanks to your advice last year) and I couldn't find the field corn in it ... I'll look online. It's easier to do all my ordering from one place and they seem to have a lot of the heirloon stuff I want. The only problem I had last year was a late ship ... hopefully won't be a problem this year.
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