In 1998 Clark began working with the defunct Penticton Vees Hockey Club to create a series of paintings depicting the team during its glory days, the mid-fifties. In 1955 the Vees whipped the heavily favoured Russians 5-0 to take back the World Championship for Canada. Little is mentioned in the history books about their amazing Cinderella run at hockey supremacy; Clark is out to change that. After exhibiting the work in 2000 at the Penticton Museum, Clark created a commissioned mural of the team on the Elks Hall in Penticton. The mural has been featured on Hockey Night in Canada twice.

Clark's paintings have been described as "a celebration of life", and the combination of his passion for painting and hockey continues with the creation of new works of the Vees and other forgotten heroes from a not so distant past. Clark's work has been auctioned to support the British Columbia Hockey Hall of Fame, Andy Moog Charity Golf Tournament, and the Art Gallery of the South Okanagan. His work is in the Collection of the Penticton Hockey School, Penticton Panther Hockey Club, Penticton Memorial Arena, and several other private and public collections.

Glenn does not limit himself to painting figurative subjects; he has recently painted another series of oil sketches that depict the power the beauty of the Okanagan has over its residents. At times the Okanagan storm skies can command deep respect with their rays of light piercing through dark clouds to shine a single sunray on a particular orchard or vineyard in the distance. Glenn captures these brief moments exquisitely in these small and evocative paintings.