For glass that is fitted into window frames, you will need to find a company that does custom stained glass. I googled stained glass windows and a local company came up in the search who specialize in them.

You could check out your local salvage yards but you'd be very lucky to find something in the right size. Your best bet would be to commission a local stained glass artist to recreate something similar.

Please contact us to see how we can help you achieve the look you want in Stained Glass. We ship nationwide of you are not in our area. See us here on Houzz or our DC Studios Website . Sample of one of our panels is below.

We are an Art stained glass studio located in Europe. We design and make artistic stained glass artefacts worldwide for ten years.
With pleasure we will help you.

Have a gorgeous day!

Best regards,
Franci Sigmund,
owner of EFART,
studio for artistic stained glass and luxury design

http://royal-selection.com/service/world-surrounded-beauty

With us beauty takes flight!

Wow. This stained glass is stunning. I would love to implement it in my own home. I am obsessed. http://www.boulevardglassandmetal.com/storefront-glass.html