L3R

Sources
  1. 1Field sale tablet, BC 2000–1500. The Met, ME86.11.329, CC0
  2. 2Torrens register, 1858. Sir Robert Torrens, History Trust of South Australia, CC0
  3. 3Domesday Book, 1086. Author unknown, public domain
  4. 4Surveyor’s chain, 1620. William Roy’s 1785 plate, public domain
  5. 5General Mining Act, 1872. Native copper, photo Géry Parent, public domain
  6. 6Land Ordinance plat, 1785. Hutchins and Carey, Library of Congress, public domain
  7. 7Zoning envelope, 1916. Commission on Building Districts, public domain
  8. 8Telstar 2, 1963. NASA Goddard Space Flight Center, public domain
  9. 9Plumb bob, ancient Egypt. Photo Ejtack, CC0