This glorious vintage window was found in Orange, California. Cleaned up the window with vinegar and water, did not sand the frame and double checked that the window was sturdy enough to hold the weight of the ton o’glass I would need to complete the piece.
After playing with adhesives for glass, clear e6000 adhesive is my go-to … unfortunately it’s a toxic adhesive with an overwhelming odor so windows need to be open with no kids and/or pets present.

Since most of the box stores, hardware stores, Michael’s, Target and Walmart carry clear e6000 adhesive it’s pretty easy to find.