View of the Mack Building at California and 16th (Sixteenth) Streets in Denver, Colorado. Shows an Italianate style building with tall arched windows, balustrade, and rusticated stone trim. "18 Louis Mack 90" appears on pediment. Signs read: "Central Business College. Short Hand Institute and Night School," "Dr. S. F. Shannon, Hom�opathist," "Doctor Craig," and "629 Warren's Millinery" on the awning.