The Nivellement Général de la France network was established by Paul Adrien Bourdalouë between 1857 and 1864.
Sources
- Le nivellement - Géodésie (geodesie.ign.fr)
- https://www.aftopo.org/lexique/nivellement-bourdaloue-reseau-de/ (aftopo.org)
- https://www.persee.fr/doc/ingeo_0020-0093_1937_num_2_1_6311 (persee.fr)
- https://francearchives.gouv.fr/fr/findingaid/c805f44e42fa197086642cbcd5dc79874301ea3b (francearchives.gouv.fr)
- https://tourisme-marseille.com/fiche/les-plaques-reperes-de-nivellement-ngf-de-marseille/ (tourisme-marseille.com)
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