I have just about finished all the structures for the Pioneer Mills diorama. The last structures are the wharves and small two sheds that were adjacent to the mill. There are only two images that show this area and neither one shows the entire area. The first shows the rear walls of a wood shed and part of a low brick wall to the south of the mill building.
This next shot shows the area much later in the 1880s. It is cited in the Alexandria City study on page 22 of the Robinson Terminal Redevelopment document here. Their caption says, "Backyard of Pioneer Mills, n.d. This circa 1880 photograph shows the houses at 310-306 South
Union Street (on the left), James Green’s wood yard (center), the rear of the coopers shop with the kitchen
addition removed, and a portion of the brick sheds (on right) southeast of the Pioneer Mills’ main building.
(Photographer Unknown, Alexandria Library, Special Collections Branch)." It is not clear to me which building had the brick wall with the vertical slots.
The center house on the far left may be the only building in this image still
standing. Here is the current Google Street View of that house on the south side of Wolfe Street.
Alas, this is not a lot of information on which to base a model. So I plan to add small wooden and brick sheds south of the mill. Their designs will be based on other period buildings. The rest of the area will be open for wood and coal storage.