This ms. was I believe published by the Canadian Banker in 1961 or thereabouts. HvS argues that art provides daily pleasure in addition to having a market value. She starts her article with the basic question - "What is important to us?" If one's only interest is in selling at a higher price, then art may not be the best investment. But if the art gives joy, then there is a dual return on the investment.
Postscript November 25, 2016
The article was published in the Winter 1960 edition of The Canadian Banker,