You probably know the story, quite possibly apocryphal, of Ernest Shackleton's newspaper ad for crew for his expedition to the South Pole:

MEN WANTED FOR HAZARDOUS JOURNEY. LOW WAGES, BITTER COLD, LONG HOURS
OF COMPLETE DARKNESS. SAFE RETURN DOUBTFUL. HONOUR AND RECOGNITION IN
EVENT OF SUCCESS

And then I wondered if any readers out there had examples of other remarkable invitations they've heard about or experienced?