The Columbia promo pic sleeves are a sideline collection of mine. In addition to the Druids, from memory I have the Magicians "Invitation to Cry", the Guilloteens "Wild Child", the Millenium "It's You", the Chambers Brothers "Time has come today" - the first version which is 2 1/2 minutes of true garage and the best record of these mentioned, the What Four (girl group, I forget the song), Len and Glen "Write me baby" - greaser-nerd garage which is pretty fair, Electric Flag "Groovin is easy" - probably not a favorite of the young punks but I personally dig this song, Young Ones "Man of mystery", Blue Beats "Extra Girl", Bob Morrison "Hey puppet man" (one of his non garage 45s also had a commercial PS), and Gene Clark which I think was a promo, I haven't looked at in a long time. I think these were all promos, my collection is in the middle of a massive clean out and reorg so I have no idea where a lot of these are to verify. I'm sure there's more but that's what I recall. I also have a decent folk rock 45 by some guy with a PS, I forgot the name
On Epic there is the Remains, of course. There's a Five Sounds "Loadin' Coal" promo sleeve with text but no pic. The Keith Relf PS was a commercial issue, I believe. The first few Date 45s were released with sleeves but they are also commercial issues.
There are also is Byrds "Mr Tambourine Man" and the Dylan promo sleeves. Also the Moby Grape simultaneous 45 debacle should be mentioned.
There's many more promo sleeves for other Columbia 45s in the soul, pop, and country genres. I have a few of them but I'm not keeping track.
I've never seen evidence of sleeves for other Columbia garage faves like the Joys Of Life, Inmates, Illusions, Liverpool Set.