In 1917 Ashley Smith wrote the following to his children and future grandchildren:
"The Gordons (Mr. Jan and Mrs. Jo Gordon) are very great and valued friends of ours. They are both artists and he has also written two books – one “The Balkan Freebooter” (an absolutely true yarn) all by himself and another called “The Luck of Thirteen” in conjunction with his wife. He also writes Art criticism in “The New Witness” under the name of “John Salis”."
"A Balkan Freebooter" (1916) was written by Jan Gordon as an account of "the true exploits of the Serbian outlaw and comitaj Petko Moritch", based on Nikola Pavlovitch of the "Luck of Thirteen" adventure. He is introduced in that book with "A very large Montenegrin in French fireman's uniform knocked at the door. He said his name was Nikola Pavlovitch." (pg 153). His story of captivity in a Turkish jail is mentioned (pg 156) in "The Luck of Thirteen", but given a whole chapter in "A Balkan Freebooter".