WWPCM10531
decks (USA):
 
"Great Northern Steamship Co."

Great Northern RR subsidiary, 1900-1917

 
"Great Northern Pacific Steamship Co."
Portland, Oregon, 1913-1917
 
1915 "Great Northern Pacific Steamship Co."
d02988

1. WWPCM10531/01: by "USPCC", 52+1J, c.1905, standard USPCC court

d10531j01 d10531sA d10531r01 box

2. WWPCM10531/02: unknown

d10531r02 d10531r03

Both lines were founded by John Jay Hill to promote business for his Great Northern Railroad, of which they were subsidiaries.
The GNSS was a trans-Pacific line out of Portland, while the GNPSS ran coastwise steamers from Portland to San Francisco.
The two lines were highly publicized and promoted, but ultimately were business failures owing to Hill's lack of understanding of the shipping business.