 He transferred his publishing house from Nantes to Paris in 1841.His son, Alphonse-Charles Leduc (Paris 1844-1892), created the important instrumental teaching collections which became the company's specialty and have been constantly expanded ever since.Alphonse-Charles's son, Alphonse Émile Leduc (1878–1951), continued the teaching collections, developed the company's school auditions and published several important symphonic composers.