Table 3.2 summarizes the structures, grouping them together by the general area in which they were located. Fifteen buildings and structures are present in the expansion area, excluding railroad tracks and roads and the first border station and immigration office. Each of the areas is discussed in greater detail below. This one-story brick building served the greater Naco community and was built in 1900. A surviving photograph, taken during the 1910 to 1916 period of the Mexican Revolution, shows sandbags set up to protect the building from stray gunfire or artillery shells.
Curtains hang in the large west-facing windows.
A tarpapered porch roof shaded the front of the store, above which an elaborate brick facade proudly displayed the store's name. Hitching posts for horses were present on the northwest side of the structure. By 1931, the store was run by the Phelps Dodge Company, and sometime afterward it was closed. A note on a photograph housed in the Special Collections at the University of Arizona Library suggests that Fred Geisler used the building for storage in the 1940s or 1950s. Employees of the border station noted that the store had burned.