English: This is "Suite E" of 140 East Main Street in Bozeman, Montana.

This Post-Modernist structure is an annex to the Krueger Block (136-140 East Main Street). The Krueger Block was built by Louis Krueger, a German bricklayer born on August 23, 1841. He emigrated to the United States, came to Montana in 1866, and settled in Bozeman in 1873. His skill as a bricklayer in the booming city earned him a large amount of money, and he bought the Metropolitan Hotel only a short time after taking up residence in the town. He changed its name to the Laclede Hotel. Krueger owned the building at least until 1885, although it is clear that he'd sold it by no later than 1889. About 1891 or 1892, Krueger financed construction of the Krueger Block -- a two-story commercial building with a turret on its northeast corner, faux crenelations along the top, and small false towers every 50 or so feet along the cornice. In 1902, he oversaw construction of the Ketterer Residence at 35 North Grand Avenue for his sister and brother-in-law, Louisa and Emil Ketterer. (This house still stands, and is listed on the National Register of Historic Places.) Louis Krueger died on June 12, 1919.

The Bozeman National Bank took over occupancy of 140 East Main, and the Krueger Block is sometimes known as the "Bozeman National Bank Building". The Bozeman National Bank was capitalized in 1882 as only the second bank in the city. It closed in July 1893 after the Panic of 1893 struck, but it returned to profitabilty and reopened. In 1907, the Commercial National Bank merged with the Bozeman National Bank. In time, the Commercial National Bank became First Security Bank, which remains in business today in Bozeman.

Some time in the 1920s, 1930s, or 1940s, the Krueger Block was stuccoed over, and Western States Insurance occupied the structure.

Western States stayed in the building until the early 2000s. The building was then purchased by the architectural firm Jonathan L. Foote and Associates. Logan Leachman, a partner in the firm, designed the renovation of the Krueger building. The architectural firm GSBS assisted with the design.

JLF wanted to remove the stucco and restore the original brick exterior, arched windows, and corner turret as well as add an annex in the rear. But the brick beneath was in such extremely poor condition that it could not be retained. So JLF and GSBS decided to remove it (and the turret) used rusticated brick to mimic the look of a weathered, historic building. Modern rectangular windows replaced the arched windows on the second floor, but the street-level arches were enlarged to compensate. The original building was also reinforced with steel columns, and tempered steel used for all windows and doors.

The annex proved another problem. Due to height restrictions on Main Street, the only place to add density was in the alley. So a tiered approach was used. A narrow, four-story steel and black tempered glass structure looms behind the original building, but the main annex ("Suite E") behind the connecting structure is just three stories high (with a story-and-a-half first floor). The steel beams which connect the original building with the connecting structure continue on through to the new annex. The annex facades were designed to make it appear as if an existing building were surrounded on the south and north by a modern glass one. In fact, the entire structure is modern. The "historic" section is made of rusticated limestone and red brick, while dark tempered glass forms the remaining walls. The whole makes it also look as if the connecting structure has "pierced" through the "historic" one and protruded south. Inside the 13,000-square-foot annex, all air ducts, springlers, and plumbing are exposed in a Post-Modern fashion. The connecting structure and annex both have "light harvesting" windows which lighten when sunlight is minimal, and darken when it is bright.

Renovations began in June 2007 and were completed 18 months later. When a gas main exploded on March 5, 2009, a block away, JLF designers credited the renovated structure's steel reinforcements and tempered glass from preventing damage to the building (while other businesses nearby were devastated).

As of 2013, the Krueger Block housed a restaurant and two retail stores on the ground floor of the original building, with offices and an apartment of Leachman above. Gallatin Laundry occupied the ground floor of the annex, while JLF occupied the the second and third floors. The connecting structure acts as the lobby, and stairs in it lead to the floors in the annex.

Although the structure (and the Krueger Block) is located within the Main Street Historic District, which is listed on the National Register of Historic Places, it is not a contributing structure.