Anyone in Los Angeles California know where to get Black Sea Man or Copper River seedlings?

I got these varieties at a Tomatomania event, and then I managed to break them off.

I'm trying to root the tops and I am hoping to get some suckers from the bottoms but I'd feel much better if I could get some replacement plants without having to start from seed.

I've checked the boutique nurseries in my area (south bay) and the lovely lady in Lomita who grows to-order but nobody has these varieties, which I love.

Hope everybody else is having better luck than I am!