Suggest an update Name* Categories* State* Locality* ZIP* Street address* Phone* Website* Company description* Lawyer Mark Ian Lancaster, Practice Areas Administrative Law Lawyers. is located in the city of Helena, the state of Montana. Attorney legal address Po Box 114424 W. 6th Ave. 4th Fl.Helena, MT, 59624-1144. For more information, please call (406) 442-7450 Your comments* (not for publishing) * — Required information Mark Ian Lancaster ← View details Po Box 114424 W. 6th Ave. 4th Fl.Helena, MT, 59624-1144, Helena, Montana (406) 442-7450