Super day!!
That is about the age I was when I first saw my uncle's American Flyer layout. I was hooked. Alas, they moved away soon after. I had to wait until I was about 12 and saved my money to buy a train set. They were too expensive for a Christmas gift, but Dad taught me a good lesson to save money for a particular goal!
Looks like Grandma was good at helping out!
Thank you for sharing the photos!!