Keywords: Armstrong Edward centric benzene.jpg Black and white drawing of Edward Armstrong's proposed centric structure of benzene My scan Page 395 of A Text-book of Organic Chemistry by Arnold Frederik Holleman 1921 and page 472 of A History of Chemical Theories and Laws by Matthew Moncrieff Pattison Muir 1907 1887 Edward Armstrong Journal of the Chemical Society 1887 volume 51 page 254 Historic_Benzene_Formulae_Armstrong_ original png<br />Historic_Benzene_Formulae_Armstrong-Baeyer_V 1 svg History of chemistry Henry Edward Armstrong Benzene |