Except for a brief stint on the bench, Ozro B. Gould practiced law in Winona from 1867 to January 1907, when he died. For over seventeen of those years, from 1877 to 1895, he practiced in partnership with Arthur H. Snow.
On March 30, 1907, the Winona County Bar Association presented a memorial to him that contained biographical data and reflections on his character. The memorial committee noted changes in Gould's temperament over time--once "quick tempered and impulsive" he became patient, tolerant and open-minded as time passed. It recalled that he "felt that the last years of his life were the best because of the continual widening of his horizon." Not mentioned in the memorial was a wrenching, bitter, humbling event that may have led to his mellowing and those "last best" years. In early 1895, he accepted an appointment by Governor Clough to the district court, dissolving Gould & Snow. Under the law at that time, he was required to stand in the November 1896 election. He ran but was beaten by Arthur H. Snow.