[3] While acquiring titles for Thomas Dunne Books, Kirkpatrick edited The Peasant Prince, Alex Storozynski's biography of Tadeusz Kościuszko, published in 2009.
[7][8] In 2014, Kirkpatrick published Charles Falco's memoir Vagos, Mongols, and Outlaws, which would serve as the basis for the TV series Gangland Undercover.
[13] In his first few deals as an agent, he has represented authors Bob Tewksbury, Chael Sonnen, Steven Novella from The Skeptics' Guide to the Universe, and Olivia Hussey.
In April 2019, Kirkpatrick brokered his first deal with his new agency in selling the rights to David Wright's forthcoming memoir, to be co-authored by Anthony DiComo, to Dutton, an imprint of Penguin Random House.
"[16] Kirkpatrick is the author of Cecil Travis of the Washington Senators: The War-Torn Career of an All-Star Shortstop (2005), Magic in the Night: The Words and Music of Bruce Springsteen (2006), and 1969: The Year Everything Changed (2009).
[17] The book received positive reviews from the History (U.S. TV channel) Magazine, which called it "A compelling account of the historic year" and Library Journal, which said, "In this compelling account, Kirkpatrick treats the tumultuous events of 1969 with the skills of a journalist, a historian, a sociologist, and a sportswriter and manages to insert moments of lightness and triviality into his grand tour.
Following its paperback publication, Magic in the Night was praised by PopMatters as "A treasure trove for serious Springsteen fans," and The Irish Times said "It is always salutary to be reminded that no matter how much you think you know something, there is always someone who knows more.