Joni Mitchell: Hejira (1976)

"Critically, the album was generally well received, and in the years since its release, Hejira has been recognized as one of the high-water marks in Mitchell's career." [source]

However, it did not sell well -- or so I think I have read -- which is odd. Personally, I think this is a very good record.

Joni Mitchell: Miles of Aisles (1974)

This is a live record, with the backing band LA Express. This is a record Joni fans will want, and probably have. That's all I have to say.

Joni Mitchell: Court and Spark (1974)

As a Canadian, I should be a big fan of Joni Mitchell. In truth, I like what I have heard, but I have never felt the need to investigate further. I paid a buck, or so, for this record. I played it not too long ago, probably on a Sunday morning. It's likely her best record and it contains some of her best-known work. Oddly, I have the first US pressing rather than a Canadian pressing.