I think it depends where you live. One TSC I went to recently, there was a sign that said Ideal was the supplier. Last year, I think some of the TSC's used a local hatchery in our State. I'm not sure if it's the same for those places this year. They didn't have the breeds I was looking for, which is why I remember who they had used last year. Best thing to do is ask.
thanks.. I did just that. I went to TSC and asked. It's Privitt in NM. pretty long way off. looked for an on line catalog of their stock, nothing. so requested a catalog. want to see what I may have gotten.
I'm not sure of the hatchery for the TSC's here in NC, but I got 6 White Leghorn pullet chicks from them last week that are very healthy. They're doing great with another group (other breeds) from Meyers and my own hatch that are about a week older.