From time to time users come through asking for downloads for various Windows OS downloads weather it be 7, 8.1 or 10, This is possible to do from Microsoft themselves using media creation tools. You can links below with instructions on how to create media.
Microsoft Product Recovery
You may also find this guide useful How to Download Windows 10, 7, 8, and 8.1 Install Media — Legally.
Microsoft Product Recovery
You may also find this guide useful How to Download Windows 10, 7, 8, and 8.1 Install Media — Legally.