His 1993 novel
Eyes of Eagles received a largely positive review from
Publishers Weekly, which read, "Johnstone [...], on rare occasion, molds history to fit his tale. However, neither these liberties, nor the one-dimensional characters dampen this rousing, two-fisted saga of the growing American frontier".
Talons of Eagles, his first hardcover, was reviewed by
Publishers Weekly: "Despite some interesting period lore, the narrative is padded with lengthy historical discussions and further weakened by lackluster prose".
Kirkus Reviews wrote that
What the Heart Knows was "a sentimental wannabe
Bridges of Madison County, strictly for the romance crowd".
Library Journal gave a
starred review to
A Lone Star Christmas, writing that it was "[a] well-paced saga with cattle rustling, bar fights, painful secrets, unrequited love, and a baby born on Christmas day".
Butch Cassidy: The Lost Years received a positive review from
Publishers Weekly, which wrote, "Johnstone is a masterful storyteller, creating a tale that is fanciful and funny, exciting and surprisingly convincing".
A Frontier Christmas received a negative review from
Library Journal, which wrote that, though "The Johnstones consistently write great Westerns", there is "the relentless barrage of terrible events in the story line" and to "read this one for the action, not the Christmas cheer". A
Library Journal review of
A Texas Hill Country Christmas read that the novel was a "rollicking Western" that is "full of gunfights, outlaws, and an unforgettable holiday". ==Selected works==