“Power of the Mark,” an exhibition featuring Jon Imber’s pastel drawings, is on display through Aug. 30 at Greenhut Galleries in Portland’s Old Port.

This exhibition is significant in that it was one of the last shows Imber curated last winter, along with Peggy Greenhut Golden, at the time when his ALS was progressing rapidly. He died in April.

A press release about the exhibition said, “He delighted in knowing that this particular body of work would be exhibited as it documents a chapter of his life in Stonington when he and his wife, the artist Jill Hoy, were courting – a time of pure joy.”

Imber’s influences range from Hartley, Van Gogh and Cezanne to Beckman and Philip Guston, with whom he studied while working toward his MFA at Boston University. He received his BFA from Cornell University and became a professor of art at Harvard University. He also taught at Rhode Island School of Design, the School of Visual Arts in New York City and Massachusetts College of Art.

Imber’s work hangs in numerous museum collections, including Bowdoin College Museum of Art, Danforth Museum, Farnsworth Museum, Fogg Museum and the Museum of Fine Arts in Boston.

Also featured in the exhibit will be a short version of the film “Jon Imber: My Left Hand,” which was directed by Richard Kane and produced with the Union of Maine Visual Artists. The film is a testament to Imber’s determination to continue to paint as his ALS progressed.

For more information about the exhibition, go to greenhutgalleries.com.