Awdry's choice of Kenney as a replacement for
C. Reginald Dalby has been considered a fortuitous one. Kenney brought a lightness of touch and a naturalism to the illustrations that had been previously lacking. In the first book illustrated by Kenney,
The Eight Famous Engines, Kenney's superb draftsmanship and his attention to detail are already obvious. Kenney's last illustrations in the
Railway Series were for 1962's
Gallant Old Engine. By that time his eyesight was failing and he was unable to handle the fine details required for the series' illustrations. He was replaced by
Peter and Gunvor Edwards as illustrator for the
Railway Series. Before his retirement, Kenney also illustrated 31 children's books for the Leicester publisher
Ladybird Books, including a series on important British historical figures, such as
Charles Dickens,
Florence Nightingale, and
Queen Elizabeth I, as well as a 1956 book of motor vehicle characters that has an affinity with the Awdry books he was soon to work on. He also provided art for the
Hunter Hawk, Skyway Detective series. John T. Kenney died on 27 November 1972, at the age of 61. ==Books==