W. H. MULLER : BISMARCK BITTERS
I am not sure when W. H. Muller started manufacturing his bitters. My guess is sometime around the 1880s. Below is a photo of a 7 ½ inch square amber color bitters bottle embossed BISMARCK BITTERS / W. H. MULLER, NEW YORK, U.S.A.
There also is an example of a rectangular shape amber color bitters bottle embossed BISMARCK / BITTERS / W. H. MULLER, NEW YORK, U.S.A.
There are two more bottle embossed MULLER'S GENUINE / BISMARK BITTERS one is a 7 ¾ square amber shape and the one is a rectangular shape and is 6 ¼ inches tall. Note the spelling Bismark and not Bismarck.
Below is a ad from the World Almanac and Book of Facts 1902.
Below is the Trademark.
Offical Gazette of U. S Patents 1907.
Below is a dose glass.
Bitters Bottles by Carlyn & W. C. Ham.
Frank & Frank Jr. (Wicker) Bottle Collection.