 Despite the fact that his prints now sell for hundreds or thousands of dollars, according to his daughter during his lifetime he never sold one for more than $15.Using silkscreens allowed him to vary the work by changing the colors and recombining or reusing elements to the point where a work was never finished and continually evolving - he could always tinker with it and improve it more.For example, a catalog of his artwork might include multiple images of a scene such as "Around the Cape" using different color pallets, such as blues, gold, greens, etc.