The 684 Monadnock Block address used in the ads was the architectural office of H.K. Holsman, who was already a noted architect and engineer before beginning the car company. The 6th floor office in the Monadnock Building also served as the mailing address for his car company, and he continued his architectural design work there after selling the car company. The Holsman Automobile Company was located at what was then 63rd. Street & Washington Avenue, which was later renamed Blackstone Avenue, on the South East Side. The factory building is long gone.

Holsman Automobiles logo.
Holsman Automobiles logo.
In 1906, the new three-story factory of the Holsman Automobile Company of Chicago was completed, and the company moved its machinery into the building. The structure is 50 x 250 feet, three stories in height, and enabled Holsman to vastly increase their output. The company had been manufacturing automobiles for four years, and was running a night and day force in the old factory.
In 1906, the new three-story factory of the Holsman Automobile Company of Chicago was completed, and the company moved its machinery into the building. The structure is 50 x 250 feet, three stories in height, and enabled Holsman to vastly increase their output. The company had been manufacturing automobiles for four years, and was running a night and day force in the old factory.
1907 Holsman ad.
1907 Holsman ad.
1908 Holsman ad.
1908 Holsman ad.
1908 Holsman Commercial Wagons ad.
1908 Holsman Commercial Wagons ad.