Cady was born in Gardner, Massachusetts, to a town selectman, Edwin Cady, who ran a local general store. His father fostered a love of nature and encouraged his art skills. Cady entered an apprenticeship with a local painter, Parker Perkins. His first publication came as early as 1894: an illustration in a supplement to Harper's Young People (signed Walter H. Cady).
Harrison was 18 when his father was killed in Boston. He moved to New York City and within a year found work as an illustrator with the Brooklyn Eagle newspaper. His salary of $10 a week made it possible for him to support his mother; the two lived in a Greenwich Village cold water flat. He stayed at the Brooklyn Eagle for four years, while also freelancing to other publications.
His income increased considerably after Life editor John Ames Mitchell signed Cady as staff artist and cartoonist. This led to a long career as a newspaper and magazine illustrator, as well as numerous children's books, featuring both fantastic and realistic animal illustrations. After his escalating success through the 1920s, Cady and his wife Melinna decided to take an extended vacation. Touring Europe for two months in 1931, they visited London, Paris, Avignon, Brussels, Arles, Amsterdam, Rome and Venice. In a letter to Harrison's mother, Melinna detailed their adventures:
- So far I like Paris as a place to live better than any other city... the shops, the museums with the great works of art... The Follies!!! and on and on. Venice is filled with charm & great beauty & romance yet back of it all, I could imagine in time one might feel the past tragedy of the place. Every afternoon at 4, Harrison & I started in a gondola and just wandered in & out & around until 8 o'clock. It, no doubt, sounds utterly foolish at my age to be so enthusiastic about everything, but, my dear, I am living in a state of thrills."
He had a long association with Thornton Burgess, illustrating the writer's books, including Happy Jack, and his daily newspaper column, "Bedtime Stories". Their partnership spanned five decades, beginning with Baby Possum Has a Scare (c. 1912), The Adventures of Reddy Fox (1913) and Buster Bear Invites Old Mr. Toad to Dine (c. 1914), The series continued into the 1950s with At Paddy the Beaver's Pond (1950), followed by the reprint The Animal World of Thornton Burgess (1962).
Cady was very prolific, illustrating over 70 years for such publications as St. Nicholas Magazine, Boys' Life, The Saturday Evening Post, Ladies' Home Journal, Good Housekeeping and Country Gentleman.
In addition to his extensive illustrating of others' books, Cady also authored several books with his own illustrations, including his Butternut Hill series (1929), Johnny Funny-Bunny's Picnic Party (1928) and Spring Moving Day (1928).
Peter Rabbit 
Cady's Peter Rabbit comic strip was launched by the New York Herald Tribune Syndicate on August 15, 1920. He continued write and draw the strip for almost three decades. When he retired in 1948, Vince Fago drew the strip. Avon published Cady's Peter Rabbit Comics in 1947.
- Smithsonian Archives of American Art: "The Cadys Tour Europe"
- "Harrison Cady's Boys Life Birds Eye Views". ASIFA-Hollywood Animation Archive. Retrieved 2008-03-23.
- Thornton Burgess Museum
Further reading 
- Watson, Ernest W. 40 Illustrators: How They Work (includes photograph of Cady's studio)
|Wikimedia Commons has media related to: Harrison Cady|
- Archives of American Art: Harrison Cady sketchbook (1943)
- Works by Thornton Burgess at Project Gutenberg, with Harrison Cady illustrations