Orsamus Turner (1801-1855) “Origin of the Mormon Imposture” Littell’s Living Age Vol. XXX, No. 380, August 1851
http://olivercowdery.com/texts/1851Trn1.htm#turn1850
“the book itself is without doubt a production of the Smith family, aided by Oliver Cowdery, who was school teacher on Stafford street, an intimate of the Smith family, and identified with the whole matter.”