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. The law firm is one of providing quality legal services, emphasizing a “preventive law” approach – which helps their clients avoid legal problems before they arise. Mangum, Wall, Stoops & Warden P.L.L.C is a full-service law firm, representing individuals, small to medium-sized businesses, corporations, public entities and tribal clients in a wide variety of legal matters.