Theodor Schröder

"Here's a picture of Mike and Ike, two of giant polar bears with John Robinson's Circus, coming to Pittsburgh for afternoon and night performances on Monday and Tuesday, May 4 and 5. Mike and Ike are two of the best performers in Theodor Schroder's group of Siberian polars, said to be the best bear act ever presented to the public."

Slivers Johnson

 

 

"There are fifty clowns, headed by the King of fun producers, Slivers Johnson; there are clown bands and numerous groups of four footed fun makers, with other attractions too numerous to mention here." - Oswego Daily Palladium. Oswego, New York. July 27, 1918.