Frederick G. Coan ( 23 May 1859 – 23 March 1943 ) was a Christian missionary who was a witness to the Armenian Genocide . Coan served as a missionary in Persia for over 50 years . He was an author of many books including '' Yesterdays in Persia and Kurdistan '' and has provided detailed eye-witness accounts of massacres of Armenians during the Armenian Genocide . Coan believed that the number of dead during the Armenian Genocide exceeded one million people . He referred to the Ottoman government 's policy towards the Armenians as one of " extermination "
Armenian Genocide
Armenian Genocide
Frederick G. Coan