Folks, I actually found the location of the semaphore first before I found this building, although that may seem odd to you.
I understood that on the building that I am researching that still exists today, the semaphore was located on the end of the building on the corner, as you will eventually I am confident find it here.Zoom in as close as you can at the two white dots that at first appear to be flaws in the photo. If I can describe it this way, that is the figure 8 part of the semaphore on its side and in line with Wynkoop street. Between the two white dots you will find the rectangular part of the signal, in line with 19th Street.
I am of the opinion that what is construed as coal cars is actually a platform. And because we are looking from a vantage point that is more or less in line with the rear of the building, the rail is not visible behind the platform.
As was mentioned the D&RG were operating their freight room from between 11th and 12fth by 1881. This suggest to me that this building became surplus and coincides with the arrival of the building that I am studying.
The whole matter is so complicated that if I named the building without a full explanation, it would not be believed. I will do that soon, but I need to do it with photos to show it.
Anybody notice the piles of ties at the other end of the building?
John