A few days after the meeting, the artist decides to dedicate himself to the lithographic medium. This first visit will last four months. With days often starting at 8:30 in the morning and finishing well after 8:00 in the evening, Picasso will thoroughly explore the lithographic process. This experience will usher in a collaboration with the Mourlot studio that would last almost three decades and produce over 400 different graphic images and editions. "Le Taureau" was the initial lithograph made by Mourlot and Picasso.