Historical clue formulations

• Remove skin from, as whales — 2010-07-08
• Strip off, as skin — 2007-04-12
• Strip off, as blubber — 2004-12-05
• Strip, as a whale — 2003-01-19
• Work on a whaling ship — 1997-01-12
• Remove blubber from — 1994-09-10