The oval shaped windows were the red flag for me. There was one at the Carbondale Airport back in the early 80s when I was at Southern Illinois University. I think the AvTech guys used it to practice on. Not this one(from the internet) but I have an old picture of it somewhere. I'll have to dig it up.
Do you want us to guess the yellow one in the foreground or the whitish colored one in the background through the window? Foreground? I think Taylorcraft? the one in the background, Piper Cherokee or Beech Bonanza nose attached to a Lincoln Continental Limo?