I haven't seen this addressed except on maybe another site that mostly points out Tangled Shore locations and one on Io. Help page, anyone who has found Forsaken Lore, name Destination, Sector or Lost Sector. I've located 6 on my own explorations. Two on Nessus, one on Io (later learned is the one mentioned above), one on Titan, and two in the EDZ. The EDZ lore are both in Lost Sectors controlled by the Fallen in the area near the Outskirts (both near the cache either up high on a broken wall and also around a not-oft-traveled corner into a "secret" room). Titan's is to the left entrance of the Arcology near the end (a partly opened door). On Nessus, one is a Cabal Lost Sector in the Cistern (there's a weird little corridor on the left wall once you reach the big Cabal room). Another is at Artifact's Edge (I don't remember exactly where). The last one on Io is at the entrance to the Whisper secret challenge... "at" not inside. The second you land on the perch that is the entrance it should be there. I can't addressed Tangled Shore locations since I don't currently own Forsaken.