Signatures of attorneys registered to practice law in the State of Minnesota. Names were verified and biographical data obtained from Minnesota Biographies (MHS 1912), Legislators Past and Present (website), State Board of Law Examiners register (1891-1921), Minnesota birth and death certificates indexes, Minnesota court system websites, published alumni directories of the University of Minnesota law school and the St. Paul College of Law, Minnesota Legal History Project (website), the Minnesota Historical Society's online catalog (PALS), and a variety of miscellaneous sources.