Harold Mason's watercolor career started in the San Francisco Bay Area in the 1970s, expanded to Carmel on the Monterey Peninsula, as well as Phoenix/Scottsdale and Seattle Washington in 1980s. He retired from gallery exhibiting in the late 1990s. He did work in several colleges including the UNM as a coordinator of computer graphics. In 2017 he took up writing fiction novels where his work can be downloaded at Amazon.com