[1] During his youth Mignon composed poems in association with Léonce Burret, Charles Fuster and Lucien Schnegg.

[2] He studied painting with Jean-Léon Gérôme and Alfred Loudet, and Louis Pierre Henriquel-Dupont was his engraving professor.

[3] On 30 January 1936 Mignon died at Fontainebleau and is interred there; his tomb features a bronze medallion portrait executed by Charles Virion.

[4] Mignon's debut was at the Salon des artistes français in 1887, where he exhibited wood engravings in the style of Édouard Toudouze.

[7] From 1913 he engraved postage stamps for the French colonies in Africa, such as Dahomey, Guyana, Madagascar,[9] some in the style of works by Joseph de La Nézière and from 1920 after Paul Albert Laurens and Jules Chaplain for the French post office.