“MIAMI, Fla., Dec. 17 (AP) – Most race tracks are happy to have the sunshine but Tropical Park today began using a canvas shield on a 40-foot tower to hide the sun. At this time of the year, with the sun low in the sky during late races, horses entering the stretch sometimes look into the glare of the sun and shy.
Several spills have resulted, including one during the running of the feature on opening day when Jockey Kenny Church was injured.
Tropical Park decided to experiment with the tower before constructing a more elaborate sun shield. The canvas shield is placed so it casts a shadow on the running strip where ordinarily there would be a glare spot.
Several trainers have fashioned colored plastic blinkers for their horses to wear during late races.” (The Washington Post and Times-Herald, 12/18/1954)