How was the illustrations E H Shepard for Winnie the Pooh originally created and mass produced?

E.H. Shepard's illustrations for "Winnie the pooh" were originally created using pen and ink drawings, which were then enhanced with watercolor washes. These illustrations were meticulously crafted to complement A.A. Milne's text, bringing the characters and stories to life. For mass production, the drawings were transferred to printing plates using a process called lithography, allowing for high-quality reproductions in the published books. This combination of artistry and printing technology helped establish the beloved visual style associated with the classic tales.