[2] He received his first commission from Hermann Schlegel at the Leiden Museum to work on the lithographs for a book on the birds of the Dutch East Indies.
[3] He also did the lithography for his friend[4] Joseph Wolf's Zoological Sketches, as well as Daniel Giraud Elliot's monographs on the Phasianidae and Paradisaeidae.
Smit contributed illustrations to John Gould's books on birds of different parts of the world, along with leading Victorian era wildlife artists including Wolf, Edward Lear, William Hart, Henry Constantine Richter and J.G.
[5] He also provided many of the illustrations of dinosaurs and other fossil creatures for the popular book Extinct Monsters (1892) by Henry Neville Hutchinson.
He died in his home on Cobden Hill, Radlett, Hertfordshire, United Kingdom on 4 November 1929 at age 93.