i\'ve nothing on track diagrams or customers but:
check out historicaerials.com aerial photography,
the 1962 shot shows a large freight shed on the West end,
it does not appear in the 1952 or 1938 shots of the yard,
i climbed into the yard 20 years ago,
i recall one track curving around the South side of the shed,
and one around the North side with two entering the shed,
and the aerial shots portray this,
in late 2007 a brief topic appeared here as
\"Damen Ave. Bridge over the Bloomingdale Line\"