Chocolate glass was invented by Jacob Rosenthal working for the Indiana Tumbler and Goblet Company, located in Greentown, Indiana. It was introduced to the public in 1901, and was an immediate success. All glass made at this works is now highly collectible as "Greentown Glassware".
The chocolate glass formula was later passed on to the National Glass Co. and other member factories produced the popular glassware.
The maker of this pattern is unknown at present. Kamm reported shards of this pattern in clear from Sandwich, but this is discounted by some. It is interesting to note that these shakers have three little feet common to other known Greentown shakers. e.g. Dewey. Leaf
Bracket. Cactus and Cord Drapery also have similar feet but they have six
Only one other piece of this pattern is known in chocolate: the butterdish. Kamm pictured a pitcher in clear. A relish or pickle dish has also been reported in the last few years.