Mangum, Wall, Stoops & Warden, P.L.L.C. is a full-service law firm, representing Northern Arizona individuals, businesses, public entities and tribal clients in a wide variety of legal matters. The origins of Mangum, Wall, Stoops & Warden, P.L.L.C. date back to 1933, when H. Karl Mangum opened a solo law practice in Flagstaff. Our legacy is one of providing quality legal services, emphasizing a “preventive law” approach―which helps our clients avoid legal problems before they arise. The firm takes pride in the fact that many of its clients are referred by other lawyers and satisfied clients.