Participation in nationwide and inter-provincial competitions and post-competition exhibitions
Joseph Chełmowski participated in nationwide and inter-provincial competitions and post-competition exhibitions
- Sopot, 1972 The folk sculpture of Northern Poland
- Toruń, 1973 Copernicus take form in folk sculpture
- Toruń, 1975 The Great Poles, their life and work in folk sculpture
- Konin, 1976 Fireman, my friend
- Warsaw, 1977 Family in the Polish folk art
- Kraków, 1978, The farmer and his work in folk art
- Warsaw, 1978 The soldier as a defender and builder
- Wrocław, 1978 A musical instrument for a Polish child
- Chojnice, 1978-2008 The Competition of the Contemporary Kashubian Folk Art (19 editions)
- Toruń, 1980 The Vistula river in folk art
- Radom, 1980 and Warsaw, 1981 Life and work of Jan Kochanowski in the form of sculpture, relief and folk reverse glass painting
- Bydgoszcz, 1980 The artistic handicraft of the countryside
- Zduńska Wola, 1983 Maximilian Kolbe as seen in folk art
- Poznań, 1983 Sculptures and folk instruments
- Przysucha and Radom, 1984 Oskar Kolberg's work in folk art
- Toruń, 1984 Folk rite artifacts
- Bydgoszcz, Gdańsk, and Słupsk, 1985-1997 The Contemporary Folk Art in Kashubia (5 editions)
- Warsaw, 1986 The tradition and the present day of the Polish People's Movement in folk art
- Łódź, 1987 Folk musical instruments
- Toruń, 1988 The land close to the heart
- Toruń, 1991, Folk art of Northern Poland
- Chojnice, 1992, Christmas themed folk sculpture
- Wągrowiec, 1994 Folk and amateur art with biblical themes
- Toruń 1994-1998 (competition - 1994, post-competition exhibition opened in 1998) The road to Poland. The fight for independence in the imagination and memory of folk artists
- Bydgoszcz, 1996-2013 Teofil Ociepka National Painting Competition (9 editions)
- Chojnice, 1997-2007 National Competition for the Nativity Scene Sculpture (6 editions)
- Wągrowiec, 1999 The acting of angels and the devil in folk and amateur art, based on the Book of Revelation
- Częstochowa, 2003 and 2006 The national folk art competition. With the brush and the chisel.