Joni Mitchell suggestions

Which other albums of Joni's can anyone recommed that are in the same vein as Blue? ie Strong lyrics/melodies and bare instrumentation as opposed to the more overproduced/jazzy/orchestral stuff such as on Hissing Of Summer Lawns and Hejira.

These are the only three albums I have of hers and much prefer the style of Blue. What would anyone recommend for me to buy next?

Thanks for any advice

Jonathan