Register-Stout said she is excited to see the works hung, and wants people who knew and loved Register to visit the exhibition, remember him and enjoy his work again.
In a past interview with the Manawatu Standard, Register said he had learned a great deal about painting, and in particular, colour mixing, during his apprenticeship as a house painter.
"The colour and the brushing skills came from when I was 15 swishing paint around," he told the paper.
"Colour mixing is part of the job but it was never a worry because I had a good colour eye."
He was born into a family who supported his passion for art.
His father Basil, an artist himself and a member of the NZ Academy of Fine Arts from 1950, nurtured his son's artistic talents.
From an early age, the father and son painted at opposite ends of the kitchen table.
A set of oil paints, bought for him by his wife in 1970, reaffirmed his passion for art.
He was a prolific painter over the next forty years, much of his work landscapes of Manawatū, Horowhenua, Rangitīkei and Wellington.
His first solo exhibition was at Garners Store in Palmerston North, and his most memorable exhibition titled Landforms held at the Manawatu Art Gallery in 1991.
In 1998 the Palmerston North City Council commissioned a work which was given as a gift to its sister city, Missoula in Montana, USA.
His work won a number of awards in his earlier years but later he chose not to enter competitions because he said people would get annoyed with him winning.
Register liked to paint en plein air, meaning outside the studio in the natural environment.
Register-Stout said he had a reputation for putting his easel up anywhere, on the side of a street or on the beach, and painting what he saw.
"There were no airs with Jack, only an absolute life-long passion for the land and its people and capturing what he saw.
"Painting, he said was his 'visual poetry.'"
While he admired his father, whose artist approach was based on realism, Register saw art differently.
"I wanted to go down the contemporary road.
"With detail, you may look at it and think 'oh that's lovely' but after a few days there is nothing left.
"There is no magic coming out."
Register was awarded the Queen's Service Medal in 2008 for services to art and music.
Capital Views will be on exhibition in Mahara Gallery's newSPACE until June 27.