Many thanks to all the contributing galleries, libraries, archives and museums:

• The maps provided by Universitätsbibliothek Wien are in the public domain.
  UW maps
• Maps provided by Albertina
  AW maps

• 
  The maps by Universiteits Bibliotheek Gent are licensed under Creative Commons Attribution Share Alike 4.0
  UG maps

• 
  Collections University of Toronto
  UT maps

• 
  The maps by Det Kgl. Bibliotek are licensed under Creative Commons Attribution-NonCommercial-NoDerivs 3.0
  DK maps

• Instituto Geografico Nacional de España
  e.g. Wandkarte von Hamburg

• 
  The maps by Bibliothèque nationale de France are public domain
  BF maps
• 
  The maps by Charles-Joseph Minard are provided by Bibliothèque Numérique Patrimoine Des Ponts.
  e.g. FR maps
• The maps by Archives départementales de la Moselle are licensed under Creative Commons Attribution 4.0
  MO maps
• Maps by Jules Verne are public domain.
  Jules Verne maps

• 
  The maps by Staats- und Universitätsbibliothek Hamburg Carl von Ossietzky are licensed under Creative Commons Attribution 4.0
  HH maps
• 
  The maps by Leibniz Institut für Länderkunde e.V. sind Creative Commons Zero
  HK maps
• Maps by Leibniz-Institut für Ost- und Südosteuropaforschung
  BV maps
• Landesamt für Vermessung und Geoinformation SH:
  SH maps
• 
  The maps by Ibero-Amerikanisches Institut, Preußischer Kulturbesitz are licensed under Creative Commons Attribution-Non Commercial-ShareAlike 4.0
  SP maps
• 
  Maps by Digitale Landesbibliothek Berlin are public domain
  ZLB maps
• Maps by ULB Sachsen Anhalt are provided under CC-BY-SA
  SA maps
• 
  Maps by Herzogin Anna Amalia Bibliothek are public domain
  AA maps
• 
  Digitale Bibliothek Mecklenburg-Vorpommern
  MV maps
• Universität Kassel
  KS maps
• 
  Maps provided by the Library of the University of Heidelberg are public domain.
  UH maps
• 
  Maps by ULB Münster are public domain
  UM maps
• 
  Maps by Heinrich Heine Universität Düsseldorf are provided under CC-public domain
  DU maps
• 
  Digitale Historische Bibliothek Erfurt/Gotha der Universität Erfurt
  EG maps
• 
  Maps by Gottfried Wilhelm Leibniz Bibliothek
  LH mapsLX maps GWLBHannover
• Maps by Staats- und Universitätsbibliothek Göttingen
  GT maps
• 
  The maps by Münchner Digitalisierungszentrum, Digitale Bibliothek are NoC-NC1.0
  BY maps
• 
  Maps provided by the Library of the University of Darmstadt are public domain.
  TD maps
• 
  Maps provided by GEI – Leibniz Institute for Educational Media | Georg Eckert Institute are public domain.
  GE maps
• 
  Luftbildpläne by Landesarchiv NRW are licensed under CC-BY-SA, Nutzungsbedingungen
  RW airial plans ie. Dortmund 1:5000 Hamburg 1:5000 Hamburg 1:2500
• Maps provided by dilibri Rheinland-Pfalz are licensed under Creative Commons Attribution-Non Commercial-ShareAlike 3.0
  RP maps
• 
  Architekturmuseum, TU Berlin
  AM maps
• 
  The maps by Architekturmuseum der TU München are licensed under Creative Commons Attribution-NonCommercial-NoDerivatives 4.0
  e.g. Laeis-Halle Hamburg
• 
  The maps by DB Museum Nürnberg are licensed under Creative Commons Attribution 4.0
  e.g. Internationale Reisekarte von Europa
• The maps by Verdener Stadtarchiv are licensed under Creative Commons Attribution-ShareAlike 4.0
  SV maps
• Georg Eckert Institut
  e.g. Die Hansa
• Deutsche Fotothek
  e.g. Harburg-Wilhelmsburg
• The map by Kai Krause is licensed under Creative Commons Zero
  e.g. True Size of Africa
• 
  Maps by Hamburger Sternwarte are used for scientific purposes: Copyright © Hamburger Sternwarte, Fachbereich Physik, MIN-Fakultät, Universität Hamburg. All rights reserved.
  e.g. Sternwarte Hamburg-Bergedorf
• 
  Universität Hamburg: Diaarchiv des Fachbereich Kunstgeschichte
  e.g. Grundriß des Michel
• 
  The maps by Archäologisches Museum Hamburg are under copyright – here republished under fair use.
  AR maps
• 
  Maps by Stiftung Historische Museen Hamburg (SHMH) – Museum Altone with friendly permission
  e.g. Plastikkarte Altonab

• Maps by the e-Museum, National Treasures & Important Cultural Properties of National Institutes for Cultural Heritage, Japan
  GO maps

• 
  Vrije Universiteit Amsterdam – Universiteitsbibliotheek
  VU maps
• 
  The maps by Leiden University Libraries – Digital Collections are licensed under Creative Commons Attribution 4.0
  UL maps
• The maps by hart.amsterdam are public domain
  e.g. Amsterdam in 1540

• The maps provided by POLONA are in the public domain,
  PL maps

• 
  The maps provided by ETH Library are in the public domain.
  EZ maps
• The maps provided by e-manuscripta of the Zentralbibliothek Zürich are in the public domain.
  EM maps

• 
  The maps by Wellcome Collection are licensed under Creative Commons Attribution 4.0
  WC maps
• Maps provided by the British Library are public domain
  BL maps
• Maps by Mike Ashworth Collection; with friendly permission
  e.g. Hamburg Town Plan 1952
• The maps by Hydrographic Office of the Admiralty are public domain

• 
  The maps by Library of Congress are public domain and provided for educational and research purposes. Credits: Library of Congress, Geography and Map Division
  LC maps
• 
  The maps by Harvard Library are provided for personal, noncommercial teaching and research use
  HL maps
• 
  Maps provided by Stanford Libraries are public domain
  SU maps
• 
  Maps provided by Princeton University Library are public domain;
  PU maps
• 
  University California Los Angeles digital collection
  LA maps
• Yale University Library
  YL maps
• David Rumsey Map Collection
  DR maps
• 
  The maps by University of Texas are public domain
  e.g. Mediaval Commerce – Die Hanse
• 
  Maps provided by the Leventhal Center at Boston Public Library are public domain.
  LB maps
• 
  Maps provided by the National Gallery of Art in Washington D.C. are public domain.
  NG maps
• Images and maps by National Archive – access unrestricted– Potentially Harmful Content Alert
  NA maps
• Maps by Getty Museum
  GY maps
• Maps by University of Wisconsin-La Crosse
  WI maps
• The maps provided by Internet Archive are in the public domain.
  IA maps

• 
  Maps provided by wikimedia commons are in the public domain
  WM maps
• UNESCO
  e.g. World Heritage Site of Stonehenge

⚓ Weitere Projekte des Chrono Research Lab

• 
  Chronoscope World – 4.700 alte Landkarten
  
  > Chronoscope World Tour
  > Cartographers > Chrono CityTour
• 
  Chronoscope Hamburg – interactive time-travel in Hamburg on more than 333 old maps
• 
  Chrono CityTour