[2] Post's other recurring characters include the lawyers Randolph Mason and Colonel Braxton, and the detectives Sir Henry Marquis and Monsieur Jonquelle.

[4] Post earned a law degree from West Virginia University in 1892 and was elected the same year as the youngest member of the Electoral College.

[10] Post wrote three volumes of stories about Randolph Mason, a brusque New York lawyer who is highly skilled at turning legal loopholes and technicalities to his clients' advantage.

The best-known of these stories is "The Corpus Delicti", in which Mason's client murders a blackmailing lover and dissolves her dismembered corpse in acid.

Despite overwhelming circumstantial evidence, Mason secures his client's acquittal on the grounds that no body has been found and there are no eyewitnesses to the woman's death.

Besides Mason, Abner, and Walker, Post also created the detectives Sir Henry Marquis of Scotland Yard (The Sleuth of St James Square, 1920), the French policeman Monsieur Jonquelle (Monsieur Jonquelle: Prefect of Police of Paris, 1923), and the Virginia lawyer Colonel Braxton (The Silent Witness, 1930).