In 1852, the year of publication of his translation, from German, of Karl Richard Lepsius’ Briefe aus Aegypten, Aethiopen (Discoveries in Egypt, Ethiopia and the Peninsula of Sinai), Mackenzie also translated, from Danish, Hans Christian Andersen’s In Sweden (published in the book The Story of My Life; and In Sweden). For T. A. Buckley’s 1852 book Great Cities of the Ancient World, Mackenzie supplied the chapters on Peking, America, and Scandinavia. In Buckley's Great Cities of the Middle Ages (Routledge, 1853), the author thanked "my literary friend and coadjutor, Kenneth R. H. Mackenzie" for contributing the chapters on the cities of Spain. In Buckley's The Dawnings of Distinguished Men (Routledge, 1853), the author acknowledged "I am again a grateful debtor to the kindness of my friend Kenneth R. H. Mackenzie, Esq., whose Memoir of Thomas Chatterton forms one of its most interesting chapters." ("As his taste differed from that of children of his age, his dispositions were also different," Mackenzie, 19, wrote of the dreamy 18th century romantic poet and document forger who had committed suicide in London at the age of 18. "Instead of the thoughtless levity of childhood he possessed the gravity, pensiveness, and melancholy of mature life.... some dark, doubtful ideas of the great Life had presented themselves, and his spirit was grappling with them in hard strife.")
