What are the best country albums to get?!

Question:

What are the best country albums to get?

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I dont mean modern country music but the old time music, like The Carter Family, Woodie Guthrie, Hank Williams...etc...

im starting to get into all the old folky type music and i was wondering if anyone knew any great albums from that era?

Answers: Check out Doc Watson!

edit:

Also, get a copy of Workingman's Dead by the Grateful Dead, it won't dissapoint. Anything by David Grisman will be good too. Hands Down, Johnny Cash! Buy a best of Johnny Cash,best of Dolly Parton,Soggy Bottom Boys,Patsy Cline,The Judds,a couple of bluegrass albums maybe...all great artists that have contibuted a lot to country. The first 5 that come to mind is anything by:
Willie Nelson
Waylon Jennings
Dolly Parton
Loretta Lynn
Don Williams

Oh! And Vern Gosdin.

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