He wrote for the New York World , New York Herald , and New - York Tribune simultaneously .
Dunham had at least twelve identities , but is best known for testimony claiming Abraham Lincoln 's assassination was ordered by the Confederacy .
Dunham wrote for the New York World , New York Herald , and New - York Tribune simultaneously .
Dunham had at least twelve identities , but is best known for testimony claiming Abraham Lincoln 's assassination was ordered by the Confederacy .