That has to be a 55 Olds. That style wrap around windshield was only on 55s and 56s and the body side trim is
not from a 56.
Thanks for the information. The car in the photo must not be my Dad's. He had a black '55 Olds 98. The car in the photo is definitely not the same car he had. Prior to the '55, he had a '53 Olds 88, a '49 Chevy (the one I previously thought was my aunt's car), and a '47 Olds 76. I was hoping it may have been the '47, as I haven't seen (yet) a photo of that car.
Again, thanks for the help.