 Complete the following phrase:  Looking back at the works Knight painted for the WAAC, Clark wrote to her The pictures you have done for us have been an immense success from every point of view. The success of the painting led to further industrial commissions for Knight throughout the 1940s. In 1945 she painted Switch Works at Ellison Switchgear in Birmingham. This was followed by paintings of operations at the Dow Mac concrete railway-sleeper works and at the Skefko ball bearing factory. In 1946 she visited Germany under the auspices of the 