A court that answered to no appeals — until it did
From 1875 to 1896, the federal court at Fort Smith held criminal jurisdiction over Indian Territory — some seventy-four thousand square miles to the west, governed by the Cherokee, Choctaw, Chickasaw, Muscogee, and Seminole nations but without a federal court of their own. Within that jurisdiction, the court's capital sentences were final. Until Congress created the right of appeal to the United States Supreme Court in 1889, a death sentence handed down at Fort Smith could not be reviewed by any higher tribunal. That structural fact, more than any single judge's temperament, explains the numbers.
Isaac C. Parker was appointed to the bench in 1875 and served until his death in November 1896, the year the court's special jurisdiction ended. Over those twenty-one years, the court tried a documented 344 capital cases. Of the men convicted and sentenced to death, Parker pronounced sentence on 160. Seventy-nine of those sentences were carried out by execution. The remainder were commuted, the convictions overturned on appeal after 1889, or the condemned men died before their sentences could be executed.
The number 79 appears in many accounts as the count of men hanged under Parker, but the full documented count across the court's entire jurisdiction is 88 executions, a figure consistent with records held at the Fort Smith National Historic Site, administered by the National Park Service.

What the docket shows
The crimes carrying capital sentences under federal jurisdiction in the Territory were murder and rape. The court's reach extended to non-Indian offenders committing crimes against anyone in the Territory, and to crimes between non-Indians within it; the sovereign courts of the five nations handled offenses among their own citizens. Parker's court, in other words, was not the sole criminal jurisdiction in that country — it was the federal one, applied in the space the nations' own laws did not reach, and sometimes applied badly, as later appellate reversals demonstrated.
The docket records are held today at the National Archives and are the primary source for any count of sentences, appeals, and outcomes. The records show the full range of the court's caseload: far more defendants were tried for larceny, horse theft, and liquor offenses than for capital crimes. The executions, though they made the court's national reputation, were a fraction of its actual work. Between 1875 and 1896 the court processed thousands of cases, and the deputy marshals who served its process made tens of thousands of trips into the Territory to bring defendants in.
The ethnic and racial composition of those executed followed, in rough outline, the composition of the Territory's population and the patterns of federal prosecution — meaning that Black defendants, Indigenous defendants, and white defendants all appear in the record, in proportions that historians have examined as evidence of the court's exercise of discretion. That analysis belongs to the scholarly literature; the record itself is the documented case-by-case archive in the National Archives.

