Ben Wicks was a tremendously successful cartoonist whose work appeared in over 270 newspapers worldwide. He produced thousands of drawings during his career, and he wanted to keep them all. He insisted, for example, that the publishers of his cartoons return his cartoons to him. He also charged his children with the responsibility of collecting his published works into scrapbooks. Two green garbage bags full of his drawings were stored at a house belonging to his son, Vincent. When Vincent moved house, however, he mistakenly left the bags behind. The new owner, Richard Harnett, found the bags and sold two of the cartoons to an art gallery for $425. Although Ben Wicks had died by that time, his estate demanded that Harnett hand over the drawings, together with his profit of $425. Harnett, in response, insists that "finders keepers, losers weepers." what is the applicable laws in this case?