These were not merely formal rules. They were enforced. The slave patrols that operated throughout the South stopped and questioned people; the railroad conductors who checked passes were participants in the enforcement system; the customs clerks who demanded signatures were operating machinery designed to keep the boundaries of slavery legible and enforceable. When the system asked “William Johnson” to sign a register, it was not being bureaucratically inconvenient. It was doing exactly what it was designed to do: creating a paper trail that would make any deception identifiable after the fact.
The arm sling was therefore not just a clever prop. It was a response to a legal and bureaucratic system. Ellen couldn’t provide the signature the system required; the sling gave her an excuse not to provide it; the captain of the steamer gave her the alternative mechanism — someone else signing — that the system could accept. Each element was a response to a specific feature of the apparatus she was navigating.
The Fugitive Slave Act of 1850 extended this apparatus northward. It is often described as a federal law, but its practical operation was to deputize everyone — Northern citizens, judges, law enforcement — into the southern slave system. Any person who provided shelter, food, or assistance to a fugitive slave could be fined and imprisoned. Any person accused of being a fugitive could be brought before a commissioner and returned to the South based on an enslaver’s affidavit, without the right to testify in their own defense or have a jury trial. The law was designed to make the geography of freedom irrelevant by ensuring that federal power followed the enslaved person wherever they went.