At 27, Delisle was admitted into the French "Académie Royale des Sciences", an institution financed by the French state. After that date, he signed his maps with the title of ""Géographe de l’Académie"". Five years later, he moved to the "Quai de l’Horloge" in Paris, a true publishing hub where his business prospered. Delisle's progress culminated in 1718 when he received the title of "Premier Géographe du Roi". He was appointed to teach geography to the Dauphin, King Louis XIV’s son, a task for which he received a salary. Again, his father's reputation as a man of science probably helped the younger Delisle. Historian Mary Sponberg Pedley says, "once authority was established, a geographer's name might retain enough value to support two or three generations of mapmakers". In Delisle's case, it could be said that his accomplishments surpassed his father's. Up to that point, he had drawn maps not only of European countries, such as Italy, Spain, Germany, Great Britain, Poland, and regions such as the Duchy of Burgundy, but he had also contributed to the empire's claims to recently explored continents of Africa and the Americas.