Well, this started out as a request, but instead I am now posting a link to a huge archive of interesting stuff!

I have an AccelGraphics AG300 7.5MB PCI 3D accelerator from ~1995-1996. It is a dedicated 3D-only accelerator based on the LSI L1B9307 chip and uses a VGA passthrough like a Voodoo 1\2. It was meant for professional use with OpenGL in Windows NT 4.0 (though NT 3.51 is also mention). It may also be referred to as the ActionGraphics 300 or when used in a DEC (Digital) Alpha workstation it may have been called an SN-PCXAG-AU or Accel Graphics Pro 2000. It seems AccelGraphics was owned or purchased by Evans and Sutherland at some point so this card is often listed under their name as well. There are also several other names related to this card... Kubota Graphics Corporation holds the FCCID for the card itself (LMS32ZPCI; but KGC is also printed directly on the LSI chip), there is a sticker on the card that says "datest corp" "Test", it also has 32ZPCI printed on it.

So yeah... a few dozen possible search terms and a lot of dead ends online!

The main archived driver page is here but there are no drivers available that I could find. They all request that you register first, which obviously doesn't work anymore.

There was an AccelGraphics FTP, but that is gone. There was even an Evans and Sutherland FTP that had the same files... but that is also gone.

Thankfully, some beautiful, wonderful person named GL1zdA downloaded the entire Evans & Sutherland driver FTP back in 2009 and uploaded it to the internet archive in 2022. It is available here:
https://archive.org/details/ftp.es.com-drivers

As far as I can tell, this is the last place where these files can be found. What's really annoying is that after probably two hours of digging, no amount of google searching or searching on archive.org revealed this FTP download, even though the page for it clearly has the terms AG300 and drivers on it, as well as the word "accel" over and over. If I had known to search for 'evans AG300' I could have saved myself a lot of time! 🤪

Anyway, I'm happy to have found these. I will be setting up NT 3.51 and NT 4.0 to test some obscure old OpenGL accelerators soon. 😀