I contacted that ad as well (I need the street side), and he has no wing windows. Good news Airstream still makes the 1969 wing windows, complete with frame, but they are lexan, and they are about $450.00 a piece. I keep holding out for a glass one. 2 came up on ebay and each sold around the $500 when I ran out of airstream money to go after it. We may end up with a lexan one, but for now the plexi the previous owner used, while ugly doesn't leak and is hidden by the rock guard most of the time. Out of Doors Mart has the windows listed on their website for the 69 specifically, and I'm sure all airstream dealers can order them in.
Scott & Megan
WBCCI #8671 Oregon Unit
63 PARTS NEEDED
Tappan range oven (for spare parts)
baby moons for stock rims with clips
twist drawer knobs and their face frame screw in hook