The NPC operated in the northern California counties of Marin and Sonoma that carried redwood lumber, local dairy and agricultural products, express and passengers. The NPC operated almost 93 mi (150 km) of track that extended from a pier at Sausalito (which connected the line via ferry to San Francisco) and operated northwest to Duncans Mills and Cazadero (also known as Ingrams).
The NPC became the North Shore Railroad (California) (NSR) on March 7, 1902. In 1907 the North Shore Railroad became part of the Northwestern Pacific Railroad (NWP). Southern portions of the line were standard gauged and electrified by the North Shore for suburban passenger service, though tracks north of Point Reyes Station remained 3 ft (914 mm) narrow gauge until abandonment in the late 1930s.(Wikipedia)