Wolffe & Co. in Walsrode, Prussia had a London agent, George Beutner, in 1892 then established The Walsrode Smokeless & Waterproof Gun Powder Co. in 1894. Walsrode Gray 33 grain = 3 Dram; Green 30 gr. = 3 Dram.
In 1895, agents included Von Lengerke & Detmold, N.Y., Von Lengerke & Antoine, Chicago, M.F. Kennedy & Bros., St. Paul, and Clabrough, Golcher & Co.
In 1895, President Grover Cleveland order 1,800 ‘ducking’ shotshells from William Wagner, Washington D.C. and specified they be loaded with Walsrode
3rd column under Trade Notes
http://library.la84.org/SportsLibrar.../SL2501014.pdf
Dr. George N. Thomas organized the Walsrode Gun Club in Trenton, N.J. in 1895; later the Trenton Shooting Association
https://books.google.com/books?id=b5...J&pg=PA272&lpg
1902 "New Green Walsrode"
In 1903, Schoverling, Daly & Gales advertised as the “Sole U.S. Agents” and listed Walsrode as “The Original Dense Smokeless”
1915
Forest & Stream