KBR: The Royal Library of Belgium (1770–1778). "The Ferraris Map". p. 81: Charleroi. Archived from the original on 30 May 2019. Retrieved 2 December 2021.
KBR: The Royal Library of Belgium (1770–1778). "The Ferraris Map". p. 98: Fleuru. Archived from the original on 30 May 2019. Retrieved 2 December 2021.
KBR: The Royal Library of Belgium (1770–1778). "The Ferraris Map". p. 97: Gembloux. Archived from the original on 30 May 2019. Retrieved 2 December 2021.
KBR: The Royal Library of Belgium (1770–1778). "The Ferraris Map". p. 66: Merbes le Chateau. Archived from the original on 30 May 2019. Retrieved 2 December 2021.
KBR: The Royal Library of Belgium (1770–1778). "The Ferraris Map". p. 82: Thuin. Archived from the original on 30 May 2019. Retrieved 2 December 2021.
web.archive.org
KBR: The Royal Library of Belgium (1770–1778). "The Ferraris Map". p. 81: Charleroi. Archived from the original on 30 May 2019. Retrieved 2 December 2021.
KBR: The Royal Library of Belgium (1770–1778). "The Ferraris Map". p. 98: Fleuru. Archived from the original on 30 May 2019. Retrieved 2 December 2021.
KBR: The Royal Library of Belgium (1770–1778). "The Ferraris Map". p. 97: Gembloux. Archived from the original on 30 May 2019. Retrieved 2 December 2021.
KBR: The Royal Library of Belgium (1770–1778). "The Ferraris Map". p. 66: Merbes le Chateau. Archived from the original on 30 May 2019. Retrieved 2 December 2021.
KBR: The Royal Library of Belgium (1770–1778). "The Ferraris Map". p. 82: Thuin. Archived from the original on 30 May 2019. Retrieved 2 December 2021.