Gary was born into a third generation ranching family near Toppenish, Washington and began painting at an early age. While taking painting lessons from noted Western artist Don Crook in 1981, Gary began to realize his potential. With Don's mentoring and encouragement, Gary made art a career choice.

With the love of the west in his blood, Gary created work with an emphasis on old west culture during much of his early career. Working with his hometown community, Gary painted a collector series of 10 rodeo posters celebrating the area's ranching heritage. For nine years, Gary traveled the west and Midwest, designing and painting 43 murals for towns in California, Washington, Oregon, Montana and Illinois. In 1995, Gary proudly created a bronze sculpture of 5-time world bareback bronc champion, Bruce Ford, which went on permanent display in the Pro Rodeo Hall of Fame in Colorado Springs, Colorado.

In 1998, change was in the air, and Gary moved to the big sky country of Montana. “First and foremost I have always been an outdoors man,” says Kerby. “Secondly, I'm an artist. With my love of wild country and adventure it only seemed natural for me to be painting landscapes and animals – and what better place than the wilds of south central Montana”. Gary relocated 80 miles north of Yellowstone National Park, near Livingston, Montana. Natural beauty surrounds my home,” says Kerby, “not a day goes by that I don't find inspiration in a deer wandering through my yard, the sound of a sandhill crane at dawn or the evening sun on the Crazy Mountains”.

The abundant new inspiration Gary enjoys translated to numerous one-man shows and commissioned works. Most recently, Kerby was commissioned to create a life-size bronze mountain man for the community of Wilsall, Montana. This work, a gateway sculpture celebrates the Shields Valley area's discovery and heritage. In 2007, Gary was asked to create the 75th anniversary rodeo poster for Toppenish, Washington and was named Lead Artist for that community's “Mural in a Day” art project.

Kerby invites us into his creative experience, “My hope is, all of you will travel with me to the wild places, experience wild creatures and feel what I felt though the work I create. Take a walk with me. Let's see where the journey takes us”.