Funny, I was working at the Aeronautical Chart and Information Center down by the Bush Brewery when drafted into the army in 1968. We could have been standing in some of the same lines. I saw the old map factory during my visit, still looking about the same. Much has changed but the food is still first class. I didn't have a chance to visit the Planetarium or science center but did wonder about Forest Park for a while. I always liked St. Louis.
As for the orchid in Row 1, Photo 2, it looks like a Brassavola/Cattley cross to me but some of those names have changed so naming it would be difficult.
Jim