He was also my husband's uncle. I only found two of his images online, the remainder are photographs of prints we have on our walls - intentionally poor quality for those. He was a member of the Lyme Art Association, so there may be more information on their site.
The Courant (Hartford, CT) had this bit about him announcing a showing:
The LAA Elected Artist first studied art in Hanover, Germany, while in the Lysenko refugee camp from 1945 to 1949 with Ivan Kubarsky (Armashevsky), Vasyl Perebyinis, Volodymyr Balas, Anatol Jabonsky and others. In 1949, Pater immigrated to the United States. From 1957 to 1959, he studied art at the American Academy of Art in Chicago. He attended the Rhode Island School of Design in Providence, R.I., from 1960 to 1962.
Rest in peace.
Update: I maybe should also mention that he was an engineer before he retired