Just a few minutes ago, I released the first group of images from the Prodigy Preservation Project on Flickr. They're screenshots from MadMaze, a vintage online game that ran on Prodigy Classic between 1989 and 1999.
Specifically, they're all the graphics from the Place of Power instances in the game.
I believe most, if not all, of the artwork was done by Al Sirois, a Prodigy staff artist. Al Sirois did some of the artwork, but Sirois says that most of it was created by other artists (see comments below). They originated as NAPLPS vector graphics (scalable to any size) and were captured into a raster format for display on the web.
If you'd like to support the Prodigy Preservation Project and all of my history work, please consider submitting a pledge on Patreon. Any money I get from Patreon helps a ton toward giving me the extra time to work on history projects like the PPP.