I have DOS 6, Win 3.x, Win 98, Win 98 SE, WinMe, Win NT4, W2K, and WinXP available in multiple languages in ISOs. The DOS and Win 3 ISOs can be used to create floppies, if you have a floppy drive around. The Win 98 and NT4 ISOs can create both floppies and CD/DVDs. The others can create CD/DVDs only.
I can even supply activation keys, if required. (Note: I suspect that none of them will actually work any more, as Microsoft probably turned off the activation servers years or even decades ago, but they're actual legit activation keys...)
Microsoft hates me.