Mapledoram is in earnest about his umpiring, and will not allow his decisions to be questioned. Yesterday he fined Dunlap $10 for what he considered improper conduct. At Cincinnati he fined Bradley $0, and when appealed to reduce the penalty to $25, he peremptorily refused.-St. Louis Globe-Democrat, May 28, 1884
I'm not so concerned with Blake Mapledoram and his earnestness as I am with the idea of Fred Dunlap "questioning" an umpire. Given Dunlap's nature, I doubt that it was as polite an encounter as the Globe makes it sound.
We should really add this to the What Did Dunlap Do? file: In the first game against the Keystones, Dunlap went off on an umpire and got fined.