Saving Lincoln — Rob Kresge

In the closing days of the Civil War, Beth Wendland, a Union spy in Richmond, learns of a Confederate conspiracy to send a wagon bomb to destroy the White House and kill President Lincoln and his generals. Abandoned by her political masters, Beth must evade Rebel soldiers and the bomb's mastermind to deliver the information to Washington before the conspirators can unleash their deadly attack.
Assisted by the Federal officer who loves her, Beth risks more than her life to snuff out the burning fuse of the world's first vehicle bomb and prevent disaster on the eve of victory.
With its strong and resourceful heroine, Saving Lincoln will appeal to readers who enjoyed Cold Mountain and Eye of the Needle.