Lumber go Results Found: 3 Button group with nested dropdown Builders FirstSource 516 2nd St NW Mason City IA 50401 (641) 424-4952 Visit Website Home Lumber & Builders, Inc. 716 S Jefferson Ave Mason City IA 50401 (641) 424-4001 Visit Website Mason City Lumber Co. 1501 N Federal Ave Mason City IA 50401 (641) 423-6643