YesterYear Models - YYM6103 - Boxcar, 40 Foot, AAR 1944 - Northern Pacific - 48513

Prototype History: The Association of American Railroads had been establishing design standards for freight cars since the early part of the century. Each new design standard meant higher capacity, lighter, more durable cars. The 1937 standard 40' box car featured an interior height of 10'. Just prior to America's entry into the war, there was a push for an even larger interior height for the AAR standard. The first cars that would eventually be termed 1944 AAR, were actually built in 1941 but the war delayed its declaration as the standard. The new taller cars required a new design of end. Corrugated metal ends had been used since the days when wood side cars dominated for a very good reason, shifting loads would burst through wooden ends during sudden starts and stops! These corrugated panels were stamped in two sections, split horizontally down the middle. The 1937 standard had 5 ribs on one half and 4 ribs on the other -- creating what is called a 5-4 Dreadnaught end. The slightly taller 1944 model required something a little different. The lower panel has 4 ribs while the upper panel has 3 then a space and a final rectangular rib at the top. Called a 4-3-1 (or R-3-4) Improved Dreadnaught end, this design would dominate new box car construction for years.

Road Name History: The Northern Pacific Railway (reporting mark NP) was a transcontinental railroad that operated across the northern tier of the western United States from Minnesota to the Pacific Coast. It was approved by Congress in 1864 and given nearly 40 million acres (160,000 km2) of land grants, which it used to raise money in Europe for construction. Construction began in 1870 and the main line opened all the way from the Great Lakes to the Pacific when former president Ulysses S. Grant drove in the final "golden spike" in western Montana on Sept. 8, 1883.

The railroad had about 6800 miles of track and served a large area, including extensive trackage in the states of Idaho, Minnesota, Montana, North Dakota, Oregon, Washington and Wisconsin. In addition the company had an international branch to Winnipeg, Manitoba, Canada. The main activities were shipping wheat and other farm products, cattle, timber and minerals; bringing in consumer goods, transporting passengers; and selling land.

The company was headquartered first in Brainerd, Minnesota, then in Saint Paul, Minnesota. It had a tumultuous financial history, and in 1970 it merged with other lines to form the Burlington Northern Railroad.

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