Illustration of a stegosaurus under black text over green background.
New York. N.Y. 10036 Union Bug
This is a button used to identify contributors who contributed money to the American Museum of Natural History in New York City. The American Museum of Natural History in New York City was established in 1869. This button may have been from the early 1900s, when the museum acquired many of their dinosaur fossils.
Source: Wikipedia. (2015 July, 1). American museum of natural history. Wikipedia: The Free Encyclopedia. https://en.wikipedia.org/wiki/American_Museum_of_Natural_History