http://www.deleasod.com/
Delea sod farm is good. Exactly what is in their "Yankee Stadium "grass seed? I do not recommend sowing an all Kentucky bluegrass lawn unless you have excellent irrigation, excellent soil and professional weed control. Leave the all Kentucky bluegrass seed to the professional growers and their crews.
The problem is that Kentucky bluegrass emerges very slowly, and establishes very slowly--takes about a year. Thin and weedy during that year. If you want Yankee Stadium turf--buy professionally raised sod. Most seeded lawns these days contain about 20 percent perennial rye, also some Kentucky bluegrass, also some fine fescue, also some turf-type tall fescue. A seed mix that contains perennial rye and the above species will establish itself very quickly. Be sure to use top quality--disease resistant seed; it is important. A low percentage of weed seed is important.