Northern Pacific
Source: The Steam Locomotive
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In light of the spelling, ‘none of the above?’
The coal in question was Rosebud lignite, which had a ghastly ash content and called for a huge firebox and an ash pan the size of a small ore jimmy.
That’s “Northern Pacific”, not “Norther Pacific”.
And it was the NP class A’s that were the first 4-8-4’s.
Andre
Well, stating that it was the first 4-8-4 sort of gives it away, as this class became the name-sake for this railroad.
Nothern Pacific, the 4-8-4 was the first really universal engine with the power for freights and speed for passenger trains since the 4-4-0 American.