An antique NorthwestLamp Co. slag glass table lamp circa 1915-1920. The lamp features a six-panel curved shade with blue and green slag glass, adorned with a detailed metal overlay depicting trees, a river, and a townscape. The lamp base is crafted from a heavy, metal material, likely iron or bronze-toned, reflecting Art Nouveau styling. Dimensions are 26 high x 20 wide. A fine representation of early 20th-century craftsmanship, suitable for both functional and decorative purposes.