"Francine Tint: Solo Paper Show," in the media library of the Palazzo Dell'Annunciata, Piazza Vittorio Veneto, Matera, Italy, April 4 to May 4.

"Mitchell Smith: Surface Tensions," at Peter Robertson, 12323-104 Avenue NW Edmonton, through April 1.

"As in Nature: Helen Frankenthaler Paintings," work from the 1950s to the 1990s, July 2 through October 9. Also, "No Rules: Helen Frankenthaler Woodcuts," July 2 through September 24. Clark Art Institute, 225 South Street, Williamstown MA.

"Kaleidoscope: Colour and Sequence in 1960s British Art," group of 25 artists organized by Sam Cornish and including David Annesley, Michael Bolus, Anthony Caro, John Hoyland, Phillip King, Tim Scott, William Tucker & William Turnbull. At the Longside Gallery, Yorkshire Sculpture Park, April 1 to June 18; Djanogly Gallery, Nottingham Lakeside Arts, University of Nottingham, July 15 to September 24; Mead Gallery, Warwick Arts Centre, University of Warwick, October 5 to December 9; and Walker Art Gallery, Liverpool, February 24 to June 3, 2018.

"Painting in Paradise: Olitski and Poons in Islamorada" at The Moorings Photography and Art Gallery, at the end of Morada Way, Islamorada, Florida, through April 1.

"John A. Griefen: Forty Years of Painting," at Galerie Born Berlin, Potsdamer Strasse 58, Berlin, April 28 to June 10. Opening reception: April 27, 6 to 9 pm.

"Marjorie Minkin & Bruce Piermarini, Pour: Rush Rest Release," at Sideshow, 319 Bedford Avenue,, Brooklyn, through April 2.

Willard Boepple, Prints: 2 + 3D," at FXFowle Architects, 22 West 19th Street, 11th Floor, through March 31. Monday through Friday, 9 to 5.

"Big Redux: Friedel Dzubas, Mural Painting," at Tower 49, 12 East 49th Street, extended through April 2017. Curator: Patricia Lewy. This group of large paintings (from 1969 to 1980) centers on "Crossing," a 60-foot-wide painting commissioned in 1975 by Lewis P. Cabot for Shawmut National Bank of Boston. Also: 2 groups of 12 small studies for larger paintings apiece. Gallery open, Monday through Friday; weekends, by appointment.