 During this period, using the nom de plume of Hans Yorkel, he served as the New York correspondent of the "New Orleans Commercial Bulletin".He returned to New York, where he practiced law and was admitted to the bar in 1851.In that year, Hall authored a book, "The Manhattaner in New Orleans, or, Phases of "Crescent City" Life", in which he addressed the problems and challenges of large, ethnically diverse port cities and provided important historical sketches of a young New Orleans.