North of the Border — J.R. Roberts

Someone is trying to kill President Grant, and Clint Adams is drafted to track down the would-be assassin. The trail leads to faraway Alaska where the Gunsmith meets and falls in love with beautiful Joanna Morgan. Clint just about forgets his mission until the assassin gets Joanna into his sights. Now the Gunsmith picks up the trail with renewed vigor and a new motive!