 He subsequently began compiling his case reports in a bound volume, which he called "Reports of cases ruled and adjudged in the courts of Pennsylvania, before and since the Revolution".This would come to be known as the first volume of "Dallas Reports".When the United States Supreme Court, along with the rest of the new Federal Government, moved in 1791 to the nation’s temporary capital in Philadelphia, Dallas was appointed the Supreme Court’s first unofficial and unpaid Supreme Court Reporter.