Great Northern RailwayRalph W. Hidy, Muriel E. Hidy, Roy V. Scott, Don L. Hofsommer · First published 2004Open the Tome
Great Northern history manuscriptRalph Willard Hidy, Ralph W. Hidy, Muriel E. Hidy · First published 1988Open the Tome
The World Of Business Harvard Business School(4-Volume Set)Bursk, Edward C., Donald T. Clark, and Ralph W. Hidy, editors · First published 1962Open the Tome
