In the Yellowstone Valley, a Beet Farmer With an Artist's Soul

Montana Avenue in Billings is a startlingly urban raft on the vast, grassy sea of rural southern Montana. It has microbreweries, artists, a cowboy hat-fixing genius, solar-powered lofts, and huge summer street events, along with homeless people, addicts, and the occasional break-in or fatal stabbing in an alley. Saucer-size rodeo buckles, business suits, elaborate mustaches, and sleeve tattoos co-exist. Shop doors stand open on summer evenings, when the draw of Harry Koyama's narrow gallery stre...