[1] The former Schlotterbeck and Foss building is located on the north side of Portland's downtown area, at the southeast corner of Preble and Kennebec Streets.

The central three bays project slightly, and the main entrance at its base is sheltered by a metal canopy supported by chains.

The building corners also project in the manner of pilasters, and have decorative Art Deco details in the top level.

In 1887 he was joined by Charles Foss, a Maine native, and the two embarked on the production of patent medicines, which were primarily marketed as remedies for a variety of female health issues.

Its interior, designed for the manufacture, distribution, and marketing of the company's products, is also rare as a significantly unaltered example of period factory architecture, both inside and out.