forum.datacad.com

I seem to have lost my program discs and am wondering if there is any way to replace them? I would need DataCAD 19, 21, and 22.
I presently have DataCAD 22 on my computer.

I don't think any of those versions have physical discs. You can download the latest full program installers & PDFs of the related documents for each version from this page on Datacad's website.
https://www.datacad.com/download/index.html