Arthur L Rosier, who is filling the position of prosecuting attorney of Carbon county and" makes his home in Rawlins, was born in West Union, Todd county, Minnesota, October 31, 1880, his parents being Thomas R. and Helen M. (Wolcott) Rosier, both of whom were natives of the state of New York and removed westward to Minnesota at an early day. The father there engaged in farming and also devoted much time to inventions, producing a number of inventions in connection with farm machinery. He also brought forth the Rosier fire extinguisher, a product of his inventive genius, which was manufactured at Omaha, Nebraska. The active control of his business affairs, combined with his marked skill and ingenuity, made him at one time a very wealthy man. He died October 4, 1912, at the age of sixty-seven years, and is still survived by his widow, who resides on a homestead thirteen miles southeast of Torrington, Wyoming. She has reached the age of seventy years. In their family were five children: Thomas R.. who is living in Livingston, Montana; Nellie, the wife of Charles E. Ulrich, of Los Angeles, California; Mrs. Edward Krause, whose home is in Appleton, Wisconsin; and Harold W, living at Torrington. Wyoming.
    Arthur J. Rosier, the other member of the family, was the third in order of birth and in his boyhood attended the public schools of Sioux Falls, South Dakota, while later he became a student in the State University at Vermilion, South Dakota, where he spent three years. He next entered the night school of the University of Minnesota as a law student, pursuing a special course in law, covering three years, at the end of which time he was admitted to the bar upon examination before the supreme court of Montana on the 6th of June, 1906. In July of that year he began practice at Butte, Montana, where he remained until September, 1911. On the 30th of October of that year he was admitted to practice in the courts of Wyoming and opened an office in Rawlins, where he has since remained, devoting his time and attention to his professional duties. He belongs to both the Montana and to the Wyoming State Bar Associations. He is now serving for the second term as prosecuting attorney of Carbon county, having been reelected to that office in November, 1916. He always prepares his cases with great thoroughness and care, is clear in his reasoning, logical in his deductions and his arguments are characterized by great strength. He has also served as court commissioner of Carbon county and in addition to his professional duties he has enjoyed a growing private practice and is now attorney for the First State Bank at Baggs, Wyoming, and for the Stock Growers Bank of Saratoga, Wyoming, as well as for a number of private concerns.
    On the 15th of June, 1914, Mr. Rosier was married in Denver, Colorado, to Miss Grace G. Arthaud, of Burwell, Nebraska, who comes from one of the old families of Garfield county, that state. They have one child, Jean Helen, born in Rawlins, September 3, 1917.
    Fraternally Mr. Rosier is a Mason of high rank, having become a member of the Mystic Shrine. He is also connected with the Benevolent Protective Order of Elks and with the Improved Order of Red Men. His political endorsement is given to the republican party, but he has never sought office outside the strict path of his profession, preferring to concentrate his energies upon law practice, recognizing the fact that the law is a jealous mistress and would have the undivided attention of her followers if she crowns them with success. He prepares his cases with great thoroughness and he possesses a law library of rare value. His office equipment is most comprehensive and in preparing a case for the court he looks up every authority bearing upon the question and therefore enters the court well qualified for defense as well as for attack.

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