[6] Beekman graduated from Columbia Law School, and, after being admitted to the bar in 1871, he built up a large practice with an office located at 7 East 42nd Street.

[7] Beekman was devoted to various charities, including as a trustee of the New York Hospital and a member of the Executive Committee of the New-York Historical Society.

[9] After his father's death in 1877, he inherited his father's Madison Avenue residence and his elder brother Gerard, also a lawyer, inherited The Cliffs, the family estate in Oyster Bay, New York, designed by Henry G.

Due to his work with the Saint Nicholas Society, he was recognized by Wilhelmina, the Queen of the Netherlands, and made a Knight of the Order of Orange-Nassau in honor of "his services to the Officers of the Dutch Man-of-War Van Speijk during the Columbian Naval Review" in 1893.

[8] Beekman, who did not marry, died at The Cliffs in Oyster Bay on Friday evening, August 7, 1908.