I searched the 'Net last night for Grateful Dead CD releases of their studio material (outtakes, demos, alternate mixes, etc.) that are unofficial (AKA bootlegs or RoIOs (recordings of illegitimate/indeterminate/independent origin)), but unfortunately haven't come up with much, other than the "Unsurpassed" 8-volume series (https://www.discogs.com/label/1681364-Unsurpassed
), that's apparently quite old & likely has been rendered outdated & mostly obsolete by newer CD releases of upgraded sound quality.
So could anyone please suggest/recommend more recent such CD releases, esp. ones that feature tracks from early-era albums such as "Anthem of the Sun" & "Aoxomoxoa" and also ones such as "Casey Jones" & "Jack Straw"? Any attempts to help will be greatly well-appreciated - THANKS very much.