These 42 paintings, the vast majority of which have never before been exhibited, feature landscapes from his beloved East Coast.
The collection includes a dramatic watercolour of Danger Point in Arbroath, a frosty afternoon in Auchmithie and a blustery day in Crail.
Deborah said the works were some of his best which he kept for his own personal collection.
She said: “He was a very prolific painter who did exhibit widely but he kept his best pieces for himself. Danger Point was a particular favourite and this is the first outing for that one.
“I was clearing out my parents’ house when I came across a folder with more paintings in it. I wasn’t even aware the portfolio existed but there were some amazing paintings in it.
“I would rather people had the chance to see these. Now he has passed away I would like his name and his art to continue.”
Paintings by late Dundee artist Douglas Phillips found in attic exhibited