 In December 1885, he was sent to New Haven, Connecticut to work as an assistant and study electrical methods at Yale University.In August 1887 he returned to the Central Office in Washington, D.C., where he worked as a bibliographer and librarian from June 1888 to February 1896.In 1889, he published an extensive bibliography titled the “Bibliography of Meteorology – A classed catalogue of the printed literature of meteorology from the origin of printing to the close of 1881”.