It’s his day! City workers and members of some unions did not go to work in honor of Cas.
1.) A character on Star Trek: The Next Generation was named after him. (Dr. Pulaski, season two)
2.) TWO holidays honor him – a state one in Illinois (first Monday in March) and a federal one (October 9).
3.) He stood up to Russia and Prussia, for Poland’s liberty.
4.) He was friends with Ben Franklin.
5.) He trained American soldiers and cavalry, using his own funds when necessary (often).