The Ronstadt Building was completed in 1902, a two-story Romanesque business block designed by the Tucson firm of Trost & Rust. The red brick building had an erection cost of $15,000, and represented the expansion of the successful Ronstadt business. With downtown modernization, the structure was eventually demolished.
For information on Federico José María Ronstadt, building and business owner, please see https://en.wikipedia.org/wiki/Federico_Jos%C3%A9_Mar%C3%ADa_Ronstadt and https://www.facebook.com/TrostSociety/posts/3196485520469492. For more information on Tucson’s Ronstadt Building, please see https://www.henrytrost.org/buildings/ronstadt-building/
Newspaper clipping screenshot, showing a rendering of the building, is from the Arizona Daily Star, 03/14/1902 page 8, via newspapers.com
— Mark Stone
Construction Date: Jan 1, 1902
Address: East Broadway at Sixth Avenue, Tucson, AZ