From the Historical Marker Page
The Eagle Block, built in 1867, housed five storefronts and a millinery. In April 1870, the Eagle Opera House opened on its third floor with "The Naiad Queen" operetta. The theater hosted a variety of live shows through 1903. That year, on December 30, a fire at the Iroquois Theater in Chicago took more than six hundred lives. In response, local inspectors evaluated Marshall's public building. The common council voted to close the Eagle Opera House in January 1904, citing its third-floor location and lack of fire escapes.