Jim authored three books of Northern Pacific images and is an active member of the NPRHA.  Photos from Jim's collection of are available by sending an email to:
Jim Fredrickson
Museum of the Rockies, Bozeman MT
Ron Nixon was the dean of photographers who captured the NP in its prime.  A dispatcher who worked much of his career in Montana, he was an early contributor to establishing the NPRHA.  Images may be purchased from the Museum's web site.
Steve Jackson
Museum of the Rockies - Bozeman MT
Ron Nixon's Index of his photo collection in which Ron recorded basic information about each photo.  Email with questions. 
Gary Tarbox
White River Valley Museum
Images may be purchased from the Museum's web site.
John Phillips III
George Elwood
Photos from George Elwood's collection of locomotives, cars and a listing of NP models.  Images may be used with permission.
Neal Briest
Pennsylvania Historical and Museum Commission RR Museum
Thomas Tabor shots of early NP compounds, among many other subjects.
Verne Alexander
A. C. Kalmbach Memorial Foundation Library
Has Dusty Miller negatives from late 1930s.
Verne Alexander
Northwest Museum of Arts and Culture, Spokane WA
Has Wallace Gamble negatives, Maynard Rikerd collection, and more.
Verne Alexander
California State RR Museum Library
Has Gerald Best, Phillip Hastings and Robert Hanft negatives.
Verne Alexander
Oregon Historical Society
Has about 6,000 Don Roberts negatives.  Many NP.
Verne Alexander
DeGolyer Library, Dallas TX
Baldwin Locomotive Collection is devoted to the largest and most influential manufacturer of steam railroad locomotive engines in the world. This collection includes books, specifications, engineering drawings, blueprints for engines, advertising and corporate publications, manuscripts, and photographs. Guides are available for the records, detail part drawings, and erecting card drawings.
Verne Alexander
Denver Public Library Western History Collection
Otto Perry (1894-1970) took his first train picture in 1913 and didn't stop for the next 57 years, until at his death in 1970 his collection contained over 20,000 railroad photos covering almost every state, Canada, Mexico and Europe.
Verne Alexander
University of California, Bancroft Library
The Edward Nolan Collection is here, about 1K views. Some very rare; all  very expensive.  Enter Nolan Northen Pacific Collection in the search box.
Verne Alexander
Yakima Valley Regional Library
This searchable NP collection contains photos of the railroads operating in the valley photos from the construction era of the 1880s to modern times.
George Elwood
NP photo collection.  All photos are copyright by George Elwood, from my collection with credit to the photographer or by the submitter. The photos may be used by individuals for their personal non-commercial use (screen savers, modeling effort, photo albums) without restriction. Reposting or other use REQUIRES permission from the owner of the image or data.
BNSF Railway
Photo images from the BNSF photo archives.  Many of these photos were used in NP advertising over the years and came from F. Jay Haynes and Ronald V. Nixon.
University of Montana Libraries
Johnson was an avid railroad photographer, particularly in the 1950s and 1960s. His photographs document railroad equipment around the United States, including freight, passenger, interurban, and street railways. These include good NP photographs, most of them action. 
Verne Alexander
Museum of North Idaho
The Museum has over 20,000 images as well as archive material relating to the history of the Coeur dâAlene Region. Railroads covered include Northern Pacific, Milwaukee, Coeur d'Alene-Spokane Electric Line, Great Northern, Spokane International and others.  The information is on a searchable database located at the Museum. Call for an appointment to use the Library Tuesday through Saturday 208-664-3448 or e-mail or mail us your inquiries.

Verne Alexander