For meat birds, I've bought several times from both of these hatcheries, and have been very pleased with the birds. Both are located in PA, and neither have an online presence. The page for Reich's just has contact information. AFAIK, they cater mostly to the Amish and other Plain farmers who don't care about websites.
Reich's have a couple kinds of Cornish crosses that do well on pasture and aren't nearly as annoying as Cornish x from Tractor Supply. One is a barred cross that is hardy, forages well, and dresses out to 5# in 12 weeks. Not as fast as the less hardy Cornish x, but faster than Freedom Rangers. they do fine in hot weather.
http://reichspoultryfarm.com/birds/
Clearview Stock Farm & Hatchery
David Hartman
PO Box 399
Gratz, PA 17030
717-365-3234
Clearview's version of the barred broilers are called Kosher Kings. Good experiences with them, too. If I don't fill my freezer with spare roosters, I'll buy these later in the summer.