Linda Perhacs "Parallelograms (1970)"
This is what happens if a Dental Technician decides to make music, they sound like Joni Mitchell on acid. Not really but if that were the case it would be awesome. This is an album that despite its combining of psychedelic and folk was quickly forgotten after its release but began to get attention again during the psych-folk revival and its extended re-release in 2005. She's rumored to have dusted off her guitar and be working on a new album but keep in mind this rumor has been going around since 2006.
The album itself is much more dark and personal than its European counterpart Just Another Diamond Day while there's plenty of parallels (O LOL!) that could be drawn from their careers their sound is aesthetically very different, despite them being the founders of the same genre.