When was the bentwood box get made?

The bentwood box, traditionally associated with Indigenous cultures of the Pacific Northwest Coast, has been made for centuries. These boxes were crafted using a technique that involves steaming and bending wood, allowing for the creation of strong, lightweight containers. While the exact origins are difficult to pinpoint, the practice and design of bentwood boxes have been documented since at least the 19th century, with some suggesting that the technique could date back even earlier.