320 First Avenue (c1905): H. Earl Clack Home.  This successful blend of stone and wood frame design, also known locally as The Stone House, was built by Havre businessman H. Earl Clack.  Mr. Clack got his start as a hod carrier at Fort Assinniboine and eventually owned a hardware store, grain elevators, and gas and oil interests with his own brand of oil, among other things.  Mr. Clack was very successful and was widely known through the entire region.