That pic of the arena skating I have seen before. Peraps in an early 50's Skate Magazine, which back then was the official monthly magazine of the RSROA. I think where you can it would be good to also include the source of the pic, and any caption they may have had describing the skaters and place the pic was taken at......
I know there are some good photos out there of Harley Davidson and Roland Cioni skating Marathons with good crowd backgrounds like the photo you have shown today. . There are some good speed skating pics in magazines and books from the 20's 30's and 40's I have seen years back.
Thanks for sharing.....
"Racer", the Splitwood guy!