This captivating 1902 multi-color advertising cover showcases vivid period commercial artwork promoting the specialized fibre materials of the Detroit Brush Works. Operated by L. Crabb & Son at 30–32 Ash Street in Detroit, Michigan, the firm manufactured high-grade industrial and household brushes. The left side of the envelope is anchored by a dramatic, framed multi-color lithographic illustration for their trademarked "India Palmetto" fibre, depicting a Native American maiden in a flowing red robe and feathered headdress set against lush greenery, bordered beneath by the promotional motto: "The Most Durable and Best Fibre Known."

The cover was dispatched with crisp purple typewriter addressing to Mr. C. B. Rouss in New York City. Charles Broadway Rouss (1836–1902) was one of the most famous and colorful mercantile figures in late 19th-century America—a blind Virginia-born Confederate veteran turned multimillionaire merchant prince whose massive wholesale dry goods department store on Broadway supplied independent general stores and retailers nationwide.

Franked in the upper right corner with a 2-cent carmine George Washington First Bureau Issue (Scott #279B), the stamp is tied by a Detroit, Michigan machine cancel dated March 31, 1902. The reverse features a sharp New York Station A receiving machine postmark dated the following evening, April 1, 1902. The envelope displays honest postal handling, including a small surface scrape near the lower right margin, but remains structurally sound with brilliant red and green color saturation in the corner card. It stands as a visually stunning crossover piece connecting early Detroit industrial manufacturing, Native American trade motifs, and one of Manhattan's most legendary mercantile magnates