Assorted notes:

The earliest track into Seattle followed the West edge of Beacon Hill. Early clients were the Olympic Iron Foundry and Emil Sick's brewery / look for the track. There is a hotel in "Chinatown" with a diagonal face to the Southwest; possibly the original alignment into downtown. The movement of NP and GN from their depot near the ferry terminal to King Street and the tunnel under downtown, relocated Pacific Coast to West of Sears, I think. Milwaukee's passenger main was located East of Fourth Avenue; now Sound Transit, south to their turn to the shops and Beacon Hill.

There is, or maybe was, a Milwaukee insulator bolted to the Airport Way South viaduct,

Milwaukee's freight terminal was about where the new container terminal is, North of Starbuck's headquarters.

The coaling dock and ramp can be found on early photos and maps, aligned East / West. Coal burning ships were gone by WW II.