Mr. Dooley (or Martin J. Dooley) is a fictional Irish immigrant bartender created by American journalist Finley Peter Dunne. Dooley was the subject of many Dunne columns between 1893 and 1915, and again in 1924 and 1926. Mr. Dooley in Peace and in War appeared in November 1898. The book's preface was signed "F P D." the only time he would make even a slight acknowledgement of authorship in the eight Dooley books published in his lifetime, a gesture in vain as he was already becoming well known. It was an immediate bestseller, gaining favorable reviews from the critics. Dunne had selected almost all of the wartime pieces for the second half of the book (in War).