His paintings can also be found in St. Adalbert's Basilica, Blessed Trinity, the Polish National Cathedral Holy Mother of the Rosary, St. John Gualbert's, and Villa Maria Academy.
He also executed murals at Holy Trinity in Niagara Falls, statuary for St. Aloysius in Springville and stained glass windows for St. Barbara in Lackawanna.
Mazur also painted many churches outside of Western New York including Rochester, NY, Chicago, Illinois, Detroit, Michigan, Adams, Massachusetts, New Haven, Connecticut, and Trenton and Perth Amboy in New Jersey.
Mazur's secular works include the sculpted bust of Frédéric Chopin, a life-size portrait of Kazimierz Pulaski in Olean, and interior decoration at the UB Main Street Campus.
In 1955 Mr. Mazur donated a four panel, stained glass chandelier depicting Frédéric Chopin, Adam Mickiewicz, Juliusz Słowacki, and Ignacy Paderewski to the Polish Room.