Northern Pacific Stampede Pass line - Trains Magazine

To Mud's list I would add:

Pasco which is where the westward headed "Cascade Branch" diverged from the route to Villard Jct (Wallula).

Columbia River bridge between Kennewick and Pasco. Completion of this bridge actually completed the line as a through route and hapened after the tunnel was opened.

Cle Elum and Roslyn. Cle Elum had a good sized yard to disperse empty and gather up loaded coal cars. The Roslyn branch served the company mines. The coal at Roslyn was so important that tracklayers working west from Pasco laid the branch to Roslyn first, then dropped back to Cle Elum to continue the main line to the west.

If you have time the Roslyn Cemetary is very interesting. Is bsically a series of very ethnic cemetaries.

Ellensburg was original crew change point and at one time had a failry large roundhouse.  All of the old stuff is long gone now.

Easton, which is the east end of the mountain district between Easton and Lester.  Steam era roundhouse was at Lester, so helpers turned at Easton.  The old wye bridged the highway but it has been removed and I understand BNSF built a new wye that lays across the former MILW right of way.

Mac McCulloch