D. B. Cooper: Where Are You?!: This book presents the results of Condon's investigation into the 1971 hijacking of Northwest Orient Airlines Flight 305, which became known as the D.B. Cooper case.
Almost a Gentleman: This 1968 book is about organized crime in Boston. It was co-authored with Francis Russell.
The F.B.I.: A Centennial Retrospective (1989): This was part of a three-volume series about the history of the Federal Bureau of Investigation (FBI). Condon was the editor of the book, with Richard Gid Powers as co-editor.
The Eleventh of September: This book, published in 1982, is about the Boston busing crisis of the late 1970s. It features stories and perspectives from various individuals who were involved in the conflict, including Condon himself.
These books provide different glimpses into specific areas of Condon's life and work, ranging from his high-profile investigation in the D.B. Cooper case to broader examinations of organized crime and civil unrest.