Ringmasters of the Ringling Bros. and Barnum & Bailey Circus

Footnotes

# In 1907, the Ringling Brothers bought the Barnum & Bailey circus, but continued to operate the two circuses separately.
# In 1919, the circuses were combined to form a single circus.
# In 1969, the circuses were split into two units that tour eleven months every year for two years. The Blue unit has the even-numbered editions and the Red unit has the odd-numbered editions.