Adam Wirth played for the Empire baseball club of St. Louis, as indicated by
multiple newspaper and book accounts.
There is a book titled
The Origins of Baseball in St. Louis, with an image of the 1867 Empires on the cover. While the image caption is a bit blurry, Wirth is labeled as the man standing third from left.
There is also a
mention in one of his obituaries that his image once appeared in
Harper's Weekly, but it doesn't give a year and I have been unable to locate it using various search tools.