In 1858, he added the maternal name Dumaresq to his surname by official decree, demonstrating the importance of this lineage in his identity construction.
In 1870, the French Ministry of Public Instruction sent him on a study mission to the United States to examine drawing teaching methods and their application to the arts and industry. During this stay, he established fruitful contacts with the artistic circles of the American northeast, the West Point Military Academy, and the Annapolis Naval Academy. He concluded from this mission that "the superiority of the French school is recognized by all," reaffirming the importance of Paris in artistic training and consecration.
Back in France, he contributed to the design of the Binant suite in Paris in 1871 and collaborated with Van Engelen in Lille to produce a panorama of the Battle of Bapaume, now preserved in the great hall of the Bapaume town hall.
His posthumous recognition is reflected in the preservation of his works in prestigious institutions: the Museum of the Palace of Versailles, the Print Room of the National Library, and the National Museum of Franco-American Cooperation in Blérancourt. His painting "Signing of the Independence of the United States" adorns the Cabinet Room of the White House, a lasting testament to the Franco-American artistic ties he helped to forge.
