The typical "lost" Beach Boys albums focus on 1969 or 1970 or thereabouts, because the band went through various versions of albums under various proposed names that got rejected by their record company. "Landlocked" is a particularly popular title for this, even though that was pretty much just the name for the "Surf's Up" album before the song "Surf's Up" was added to it.
I'm taking a somewhat different approach, which is usually how I approach major artists with lots of stray tracks. I'm not so interested in hearing historically accurate "what if" albums as I am gathering up all the good stray tracks and making coherent albums out of them, even if the track listing wasn't exactly something the band envisioned.
And so it is here. Although I'm using one of the lost album titles, I'm just gathering up all the good non-album songs from 1967 to 1969 and putting them on one album, ordered chronologically by year. I don't start earlier because "Pet Sounds" and "Smile" are huge things that are big projects in and of themselves, and I'm not such a big fan of their music prior to 1966. (While I think the early Beach Boys have many great songs, there are many songs from then that I don't like, and I haven't seen anything close to an album's worth of rare tracks.)
Anyway, with that premise in mind, I found 43 minutes worth of good songs from 1967 to 1969. 1970 is probably the peak of good stray tracks for the band, because I plan to follow this with an album just covering that year.
By the way, I should mention that one song, "Ol' Man River," uses a special edit, which was made by Scott G. of the blog "Alternative Albums and More." There are various recorded snippets of the Beach Boys doing that song, but none of them felt like a proper song. For instance, the version on the "Made in California" box set is only one minute and twenty seconds long. He stitched the snippets together to make something coherent that lasts a full four minutes.
UPDATE: On March 8, 2019, I updated the mp3 download zip and the song list with three more songs. The reason for that is that some more music was officially released at the end of 2018, but obscurely, mainly for the record company to maintain copyright rights.
01. The Letter (Beach Boys)
02. Can't Wait Too Long (Beach Boys)
03. You're Welcome (Beach Boys)
04. With a Little Help from My Friends (Beach Boys)
05. Mona Kana [Instrumental] (Beach Boys)
06. A Time to Live in Dreams (Beach Boys)
07. Love Affair [Demo] (Beach Boys)
08. The Gong (Beach Boys)
09. Well You Know I Knew (Beach Boys)
10. My Little Red Book (Beach Boys)
11. Soulful Old Man Sunshine (Beach Boys)
12. I'm Going Your Way [California Slide] (Beach Boys)
13. San Miguel (Beach Boys)
14. Where Is She (Beach Boys)
15. Break Away (Beach Boys)
16. Celebrate the News (Beach Boys)
17. Ol' Man River [Long Version] (Beach Boys)
The cover was made by Picassoson as a mock cover for an imagined "Carry Me Home" single. I changed the text of the title.