A few finds I made during the site's maintenance period:
1. Decided to pop in a tape I've had lying around for a while from a company that was in the business of playgrounds. Most of the tape (at least from what I saw of it) was pretty dry, but I did recognize the opening music as being Otto Sieben and Peter Balding's "Marching Comedians A" from Sonoton.
2. I've found myself watching an old syndicated interstitial series called "Funny World", featuring an announcer making humorous comments over various vintage stock footage. I recognized a bunch of the music as being "JB" prefix tracks from Hi-Q, specifically these:
Disaster (JB-11)
Fire (JB-28)
Heavy Tension (JB-27)
Light Neutral (JB-24)
Metro (JB-3)
However, it seems as though they actually didn't get them via Capitol, rather from whatever library Bill Loose had created that featured those tracks Capitol had licensed from him, as the music featured in these "Funny World" shorts appear to be entirely JB tracks.