Dazzling against an inky black sky, Niagara's Horseshoe and American Falls blaze with the full spectrum of the rainbow in this striking linen-era illumination view — floodlights picking out vivid bands of gold, orange, green, and violet across the curtain of falling water in a nighttime spectacle that began drawing crowds in the 1890s and had become one of North America's premier tourist attractions by the 1920s. Copyright Tates, catalogue number 23860, published the Canadian side vantage. The sender, who signed as "Yb—" (possibly "Ybo" or a nickname), dashed off an enthusiastic note to a friend in Port Huron, Michigan: "The illumination was grand, all colors of the rainbow, but the natural color (white) is as nice as any to me."