History: Before alarm clocks, a knocker-up was a profession where people were employed to wake workers up with a long stick. England and Ireland. Late 1920s [1000 x 750]

https://i.redd.it/473iwc2pue461.jpg via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/kam46d/before_alarm_clocks_a_knockerup_was_a_profession/?utm_source=ifttt