Original Post Office / M.H. King Building

This lot hosted the first business on the Town Square. W. S. Shilling opened the Rupert Mercantile on May 2, 1905, initially in a small, saddle-roof building, replaced around 1906 with a gable-roofed, false-front structure. Mail delivery began informally, dumped in an "Arbuckle Coffee" box in the corner, where people sifted through the box for their mail. By late 1905, a proper post office cabinet arrived with 80 wire-bottom call boxes, 32 alphabetically arranged delivery boxes, 20 newspaper boxes, and 15 lock boxes.

In 1913, Shilling constructed the current high-quality brick building. M. H. King's 5 & 10 cent store became the first tenant, offering a wide variety of inexpensive items and distinctive Christmas displays featuring cosmetics, bulk candy at 10 cents a pound, keepsakes, and hair ribbons for girls.

Following King's expansion, subsequent tenants included I. Levy with groceries and dry goods, Harn & Waggoner barbers, a radio and TV shop, several flower shops, and a corporate office.