Thanks to both of you. I'll give those sites a try. I've found some useful old NP pictures of dockyard installations and industry in Tacoma in a Washington State museum archive, and some stuff about Grays Harbour. My line starts in a similar kind of place to the PG and P, but heads up the west side of the sound and along the north coast, then down by the Pacific to join the PG and P at Aberdeen. It gives me lots of potential for operating my 2 favourite railroads, the GN and NP, and to create one of my own. Scary for someone who's never been there ( I've seen Port Angeles on the horizon from a boat out of Victoria on Vancouver Island, but that's all!) and only got interested in US railroads a year or two ago. I have one book about the GN and one US model railroad book - it's a start! (Lots of English ones........)
I did discover the Seattle and North Coast railroad, which lived for a while in the seventies, run by the Milwaukee Road. Completely independent of any other trackage, it had a terminal at Port Angeles and ran to the ferry harbour further to the East where it linked to Seattle. I'm starting with that, but my port has grown bigger and justifies the rail link down to Olympia, Tacoma, Seattle and Portland.
The stuff of dreams, I know, but the stretch from Dewarin (Port Angeles) west along the Juan De Fuca Strait and south along the Pacific coast to Aberdeen would be one great tourist railway today...........