Before leaving the Academy, towards the end of 1855, he became assistant to the painter and professor Louis (Lodewijk) Jan de Taeye, whose courses in history and historical costume he had greatly enjoyed at the Academy. Although de Taeye was not an outstanding painter, Alma-Tadema respected him and became his studio assistant, working with him for three years. De Taeye introduced him to books that influenced his desire to portray Merovingian subjects early in his career. He was encouraged to depict historical accuracy in his paintings, a trait for which the artist became known.