ｇｎｇｏａｔからいい写真がとどきました（サイズが大きくて貼り付けられません）。詳細な説明は下記の英文をご覧ください。
http://www.earthseaimagery.com/images/GN_Mallet_2041_Interbay_Yard_Seattle_circa_1935.jpg
この他にもたくさんのコレクションが見られるようです。
At http://www.earthseaimagery.com/historicimages.html, Steve Thompson is putting together a very nice site of photos and audio files from Washington State, mostly NP but some GN and other. He just posted a terrific photo I've never seen before, taken from the Dravus Street overpass:
It's one of those photos you can look at for a long time and keep finding interesting details:
* the NP scalehouse in the foreground
* back view of a GRS top-of-mast-motor semaphore
* Hillyard-built Class R-1 articulated #2041
* road overpasses in the distance connecting Lawton Way to Thorndyke Ave (now long gone)
* cabooses stored mid-yard (post-war the Interbay caboose track was a single-end track near yard office at north end)
* express reefer (note trucks) and ore car (?) in middle distance
The train is eastward, crossing over from the yard onto the westward main track. Sometime during or just after WWII, Interbay was single-tracked "between 700 feet west of NP crossing [mid-yard] and 4000 feet west of bridge 4, Ballard" [roughly the current Emerson St overpass]. The former westward main became A-track, and the next track in B-track. These became the primary arrival tracks for Interbay yard (rarely used to build departing trains, which generally left directly from classification tracks). And yet another wrinkle, trains arriving from the south (Portland) normally went past the yard and BACKED into A or B track, to avoid fouling the south-end ladders and crews. Source: Jim Mattson, Dean Hausle, Bill Murphy and other GN vet interviews.
Well, history repeats itself, as BNSF last fall completed a project to double-track Interbay again, adding 3 control points (and associated signal bridges) between Emerson St and Galer St. But they didn't give up A-track - they pulled it off by "throwing" A and B a little closer to the north yard ladder, and squeezing the second main between the existing main and the turntable pit and diesel service building.
Great stuff for any west-end historian or modeler.
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