Henry B. Northup, Solomon Northup sued Birch and other men involved in selling him into slavery in Washington, DC. The historian Carol Wilson documented 300 kidnapping cases in her 1994 book, and believes that it is likely that thousands more were kidnapped who were never documented. As Solomon Northup and Henry Northup made their way back to New York, they first stopped in Washington DC to file a legal complaint with the police magistrate against James H. Birch, the man who had first enslaved him. Birch was immediately arrested and tried on criminal charges. However, Northup was unable to testify at the trial due to laws in Washington DC against black men testifying in court. Birch and several others who were also in the slave trade testified that Northup had approached them, saying he was a slave from Georgia and was for sale. No note of his purchase was made in Birch's accounting ledger, however. The prosecution consisted of Henry B. Northup and another white man asserting that they had known Northup for many years, and he was born and lived a free man in New York until his abduction. With no one legally able to testify against Birch's tale, Birch was found not guilty. However, the sensational case immediately attracted national attention, and The New York Times published an article about the trial on January 20, 1853, just days after its conclusion and only two weeks after Northup's rescue. The New York trial opened on October 4, 1854. Both Northup and St. John testified against the two men. The case brought widespread illegal practices in the domestic slave trade to light. Through testimony during the court case, various details of Northup's account of his experience were confirmed. The respective counsels argued over whether the crime had been committed in New York (where Northup could testify), or in Washington, DC, outside the jurisdiction of New York courts. After more than two years of appeals, a new district attorney in New York failed to continue with the case, and it was dropped in May 1857. Last years He worked again as a carpenter after he moved back to New York. He became active in the abolitionist movement and lectured on slavery in the years before the American Civil War. During the summer of 1857, Northup was in Canada for a series of lectures. In Streetsville, Ontario, a hostile Canadian crowd prevented