Growing up in the Detroit area, the Downtown Hudson's Store, and Lopo's cameras and Trains were my favorites. The downtown Hudson's store had a huge number of Lionel trains for sale, particularly at Christmas. Hudson's was the large department store in Detroit like Macy's in New York, and Marshall Field's in Chicago.
Lopo's Cameras and Trains was a local store on the Northeast side of Detroit, not too far from where I grew up. Lopo's had a good selection of trains, and, since my father was a camera and 8mm movie buff, he was an easy "mark" to get to take me to Lopo's. I fell in love with a Brunswick Lionel GG-1, which was the out-of-reach price of $49.95 as I recall. My dad and I had that loco taken out of the counter-top display case twice to look at one fall-winter. Fortunately, the same loco was brought by Santa that Christmas. Funny how dreams sometimes come true.