looking for limestone!

i am looking for anyone in my area (mid-michigan) who may have a bunch of limestone rocks laying around. i want to make a patio floor with them and i'm coming up short with the one;s that i have. they need to be flat and about 1&12 to 2 inches thick. or if you may know a source for them that would be great too, besides home depot,lowes or menards.the one's i have came from Onaway and i didn't want to go back up there to get more.thanks-erika

There is a place in Oscoda that I went to this past summer. I forget the name of it though. I bought some cement tree rings. If the name comes to me I'll let you know. They sell all kinds of patio blocks etc.