Joseph-Nicolas Delisle was a French astronomer and cartographer. Delisle is mostly known for the Delisle scale, a temperature scale he invented in 1732.
Joseph-Nicolas Delisle
Delisle's observatory in Beryozovo (marked a.), from Continuation de l'histoire générale des voyages, vol. 72 (1768)
Explication de la carte des nouvelles decouvertes au nord de la mer du Sud, 1752
Guillaume Delisle, also spelled Guillaume de l'Isle, was a French cartographer known for his popular and accurate maps of Europe and the newly explored Americas.
Guillaume Delisle portrayed by Konrad Westermayr, 1802
Delisle's 1718 Carte de la Louisiane
Delisle's L'Afrique, 1700
Delisle's Carte du Mexique et de la Floride, 1703