4.  Lamplighters

Before most street lights were electric, there were men hired to go by and light each of them every night and then extinguish them in the morning.  There's something romantic about the images of lamplighters, but I'm sure it was often a cold, thankless task!

5.  Ice-Cutters

Back before refrigerators became popular, people would employ "ice cutters" to bring out large, heavy blocks of ice from frozen lakes or rivers.   It was a dangerous job.