Thank you for your responses Doepack and Tadman. It sounds as if I might want to re-visit the scene of the crime again to see all of the changes which you mentioned if and when I have the opportunity to visit Chicago again.
When I was born, we lived in Hyde Park in an apartment on 54th Place a few blocks from the University of Chicago because my father's job was doing weather research at the University. He wanted to live close to his job so he would be able to get to and from work no matter how bad the weather became during the winter. We did have a car but we would use the IC commuter trains or the "L" if we were going someplace where it was difficult and/or expensive to find a parking place. If we were going to use the IC commuter train, we usually caught the train at 55th Street. One of my parents would buy the tickets and we would go through the so-called "iron maiden" turnstile and walk up the stairs to the wooden platform to wait for the train.
I also remember riding on the orange cars of the Chicago, South Shore, & South Bend at least once when I was a boy.
After my two younger sisters were born, we had to move out of the apartment and buy a house on Merrion Street between 95th and 99th Streets. My father could no longer walk to work. Instead, he had to walk over to Van Vlissingen to catch a Jeffrey Avenue bus to get to and from work. I think it was the 95th Street bus which we used to get to the 93rd Street station on the South Chicago branch.
We had to leave Chicago in 1971 when my father lost his job at the University of Chicago due to academic politics. Since my mother was originally from Arkansas, we moved there because her family seemed to think they could help my father find a job.
On Labor Day weekend in 1982, while visiting with a friend who had moved to Chicago, I had the opportunity to ride on one of the orange cars on the Chicago, South Shore, & South Bend shortly before they were permanently retired. I posted a report of this trip on the Chicago, South Shore, & South Bend page under "Orange Cars".
I still live in Arkansas and would like to visit Chicago again one of these years during the summer because my wife would like to see where I grew up.