Physical CDs don't seem easy to buy [I assume you want CDs].
Squidco shows lots of titles. Price is $16.95 a CD. They have the Lyons, but prior titles in the series are not in stock.
DG probably gets a few, but you'd have to act very fast, preorder if possible.
Back in the day I used to buy from the label on eBay, but that (at least for CDs) seems NLA.
Bandcamp has many titles, but physical CDs are 16 Euros + shipping from Europe so US outlets would be better if they have 'em.
No doubt after reviewing their Discogs page. there's some really good stuff.
I got there after listening again to Tony Coe's Axel: What Say We Play Today. Really enjoyed that one, esp Gordon Beck. So starting digging around and found that Merrill record. Fruitful search so far.
Disk 5 track 22 is Call me Darling with Thelma C. I think Fred has it right.
Keep in mind that what you see on the player probably reflects the entry in Gracenote database which it picked up when you inserted the disk. I noted that there are multiple gracenote entries for some of the disks. I ended up changing the metadata for some disks because what came up had an 'album artist' of V-disk All Stars but other disks did not (I ended up deleting all those album artist entries in the song info). With collections that have multiple artists I always set it up to display the box with one head entry and then disk numbers show up in the track listing. Like this: