I found the good old Kodak Photo CD sample images on the site linked through from the photo. Test images for MFSK image radio transmission, here we come!
I got this CD with OS/2 Warp back in early 1995. My machine didn’t like Warp at all; it repeatedly fork-bombed in the file manager, so it was essentially a £40 paperweight. So burned was I with commercial software that I bought a Slackware distro so I could run something more fun that Windows 3.11. I’ve been happily running Linux since then.