L3R

Sources
  1. 1Field sale tablet, BC 2000–1500. The Met, ME86.11.329, CC0The Met, CC0
  2. 2Torrens register, 1858. Sir Robert Torrens, History Trust of South Australia, CC0History Trust SA, CC0
  3. 3Domesday Book, 1086. Author unknown, public domainPublic domain
  4. 4General Mining Act, 1872. Native copper, photo Géry Parent, public domainGéry Parent, PD
  5. 5Land Ordinance plat, 1785. Hutchins and Carey, Library of Congress, public domainLibrary of Congress, PD
  6. 6Zoning envelope, 1916. Commission on Building Districts, public domainBuilding Districts, PD
  7. 7Telstar 2, 1963. NASA Goddard Space Flight Center, public domainNASA Goddard, PD
  8. 8Plumb bob, ancient Egypt. Photo Ejtack, CC0Ejtack, CC0