Try localfeed stores. Even if they don't carry grass seed mixes (and they most likely do), they should be able to tell you where else you can buy it. If all else fails there's always the internet.
Gail Gardner @GrowMap
Small Business Marketing Strategist, lived on an organic farm in SE Oklahoma, but moved where I can plant more trees.
Yes, internet is good, But I prefer to get recommendations first. I try to spend my money with those that earn it.
Otherwise I'll just go with what is most convenient. Thanks for the tip on the feed stores.