Credits

Photo credits

Photos on this site are used under free licences, credited to their photographers below.

• 
  A simple four-function calculator.
  Photo: jakeandlindsay, CC BY 2.0
• 
  An adding machine with its paper tally roll.
  Photo: Auckland Museum, CC BY 4.0
• 
  Terraced houses on Wynyatt Street, London.
  Photo: Jim Osley, CC BY-SA 2.0
• 
  Semi-detached houses on Rochdale Road.
  Photo: Humphrey Bolton, CC BY-SA 2.0
• 
  A clerk’s desk with account books from around 1910, in a textile museum.
  Photo: Ziko-C, CC BY-SA 3.0
• 
  Sand timers that run for different lengths of time.
  Photo: Sauvagette, CC BY-SA 4.0

Fonts: Newsreader, Geist and Geist Mono, used under the SIL Open Font Licence (licence text).