Emslie was responsible for the design, hand colouring and engraving of education artworks.
His art featured on teaching cards, educational posters, published through James Reynolds & Sons of 174 Strand, London.
In 1850, Emslie hand painted and engraved a series of 44 charts and posters, in response to the popular demand for information on the developments taking place in science and engineering as a result of the Industrial Revolution.
[2] The educational series ran 1850-1860 and covered topics of geology, geography, astronomy and natural philosophy.
In 1913, the British Museum received a large collection of his work, donated by J.P. Emslie.