Download any Windows 10 version ISO

Fantastic tool spotted here;

Tip: Download Any Version of Windows 10 - Thurrott.com
Thanks to a new batch file, you can configure Microsoft’s Media Creation Tool to download any version of Windows 10, and not just the latest version.

It links to a github-hosted script here;

Universal MediaCreationTool wrapper for all MCT Windows 10 versions from 1507 to 20H2 with business (Enterprise) edition support
Universal MediaCreationTool wrapper for all MCT Windows 10 versions from 1507 to 20H2 with business (Enterprise) edition support - .. MediaCreationTool.bat .md

Its basically a (clever) batchfile that builds some powershell commands, executes them (giving you a powershell-win-form), and downloads the appropriate files directly from Microsoft.  

Superb piece of work!