Memphis Postcards Part 7

I learned something while posting this scan from my antique Memphis postcard set.  The lake at Overton Park is still there, although the pavillion is gone, so I knew about that.  I was not familiar with the Sunken Garden or the Speedway, so I found the following explanation from Memphis' own Vance Lauderdale.  He is not actually referring to my postcard set when he mentions the souvenier folder, but to one with a photograph of the same area. 

First of all, the Speedway was a one-mile section of North Parkway, running west from present-day University. It was so named because early in the 1900s it was set aside on weekends for amateur horse racing, and it quickly became the place to be, and to be seen. The name survives today in the Speedway Terrace neighborhood around North Parkway. For some reason, over the years people started confusing the Speedway section of North Parkway with all sections of North Parkway, and then they even started giving that name to East Parkway. That's just crazy talk. And that's the problem with your souvenir folder, R.H. Although it says "Speedway," it actually shows East Parkway, and the sunken garden shown in the picture is still there, tucked into the median at the intersection of East Parkway and Madison. But the garden has changed considerably over the years. For some reason, the city doesn't plant flowers anymore in the sunken part. Instead, beginning in the 1960s and continuing ever since, they have planted an ever-changing rainbow of flowers on the slope just to the north, spelling out a giant "M."