Call local universities/colleges. Very often there's someone there who can help (either with contacts or who is willing to buy them).

Excellent! Yes, price points are interesting, especially with the increased interesting in vinyl. So many people trying their hand at selling.

*came across

I can't advertise this quite recently in my research, but haven't looked into it at depth yet. Sounds very interesting

Yes, thank you. I hold that book in high regards!