finding the answer.
"Superbas” was the nickname of the baseball team that would later be called the Brooklyn Dodgers (now the Los Angeles Dodgers). “Superba” was the title of an 1890s entertainment spectacle brought forth by the Hanlon family. When Ned Hanlon (no relation) managed the Brooklyn club in 1899, his team was called “Hanlon’s Superbas.” Hanlon was let go as manager in 1905. The Brooklyn team would continue to be called the Superbas until 1910.And now you know.
But does this Williamsport Bills card mean I can use a Bills tag on this post? Looks like it!