Northern Pacific Pictorial Vol 5 by John Strauss
Northern Pacific Color Pictorial Vol. 3, By Joseph W. Shine, @1998
Northern Pacific Color Pictorial Vol. 2, By Joseph W. Shine, @1995
Northern Pacific Color Pictorial Vol. 1 NP Motive Power- The Transitional Years
Northern Pacific Color Pictorial Vol 3 by William R Kuebler Jr
