[1] It is a stuccoed adobe building, Pueblo Revival in style since it was modified into that style, around 1937:[2] Built by Thomas Tomlinson around 1888, it was originally a one-story rectangular adobe building with double entries and functioned as a general store and post office until 1897.

It continued to be used for general stores, offices for doctors, the telephone office, a lodge meeting hall, and as the Casa Grande Valley Bank building until 1937, when Ramon Cruz purchased it for his trading post.

[2]The building was remodeled around that time into its current Pueblo Revival style, and served as an Indian trading post until 1955.

Cruz was a respected Casa Grande citizen and a member of the first elementary school board.

[2]It was listed onto the National Register as part of a study of historic resources in Casa Grande.