I grew up in the late 50's and early 60's. I saw some steam and some early diesel. When I heard the train whistle up the Columbia River docks I knew I had time for a fast walk from my house across the highway up to the tracks to watch the train come by. It was always plain SP&S brown boxcars. When I traveled to the interior, which we often did, it was always on highways that paralleled railroad tracks. My fascination was to look for that one, single, beaming headlight that signified an oncoming train. Occasionally I was rewarded with a steam engine at the lead. If it happened to be a passenger train I always wondered where it was going and wished I could be on it. It was more romantic at night when all the windows were lit up.
My layout will have tracks paralleling the main highways. My freight trains consist mostly of the typical reddish-brown box car in long strings. I use both early diesel and steam on many trains interchangeably. I like tiger stripes on the front of diesels because that is what I remember. I am fond of and want to continue to create a 50's era red brick, complete with movie marquee, and soda shop vignettes, downtown. Even most of my passenger planes overhead are prop driven. Of course, like most, my layout is full of anachronisms - phone booths under a looming cell phone tower. (I like tall things) but the overarching theme of my childhood days prevails.
For me, nostalgia and all the good things I remember as a kid (we tend to forget the bad) reinforce my enjoyment of the hobby.
What specific childhood memories and recollections have you incorporated into your layout?