00000nz a2200049n 4500 000000000 20260806123017.0 260806nn|adnnnaabn||||||||||-a|aaa||||-- ND studios ND studios postcards refer to vintage photographic postcards marked with the famous ND monogram, produced by the French publishing firm Neurdein Frères (founded in 1864 by brothers Étienne and Louis-Antonin Neurdein), which became France's largest postcard publisher during the turn-of-the-century postcard boom.History and BackgroundFounders: Étienne (1832–1918) and Antonin (1846–1914) Neurdein.Monogram: Used the distinct ND stamp on millions of topographical and ethnographic cards. Interneta resurss