Haugan was bookkeeper and later acting cashier of Batavian Bank in
La Crosse, Wisconsin from 1864 until 1870. Haugan entered railway service as paymaster and later auditor of the South Minnesota Railway Co., later the
Minneapolis and St. Louis Railway from 1870 until 1880. Haugan was the assistant to the comptroller and general manager of the Minneapolis and St. Louis Railway from 1880 until 1893. Haugan later served with the
Chicago, Milwaukee and St. Paul Railway, as Land Commissioner and Comptroller. He retired from his railroad career in 1910. Haugan was a partner and shareholder of the Chicago banking firm
Haugan & Lindgren. He was a later a director the
State Bank of Chicago. The town of
Haugan, Montana in
Mineral County, Montana was named for Hauman G. Haugan. An invalid for several years before his death, Haugan died suddenly at his winter home in
Pasadena,
California, on January 29, 1921. ==References==