Office System .DC42 images?

I'm finishing setting up my new-to-me 2/5, but can't find .dc42 images of the 7/7 applications. Weren't these on bitsavers at one point? All I see now are Twiggy images.

I last wrote these disks over 10 years ago. I looked through my file archives and found images I had downloaded from MacMothership... they're still available, and don't have any extension. Perhaps these are raw files? I recall writing the disks with a Mac Quadra that's now long gone...

I write all my disk images now with BLU. Does anyone have a suggestion where I should look for 7/7 application masters in DC42 format?

Thanks,