Public domain
Portrait of B.H. Pekelharing, Professor of Political Economy and Administrative Law at the Polytechnic School Delft
From the collection of Rijksmuseum, Amsterdam. Free to download, adapt and use — no permission needed.
Credit linePortret van B.H. Pekelharing, hoogleraar staathuishoudkunde en administratief recht aan de Polytechnische School Delft. c. 1879 - in or before 18. anonymous. Rijksmuseum, Amsterdam. Public domain.