"Fertile School History, Fertile, Iowa,"Index of Students
"History of Mitchell & Worth Counties, 1883,"Biographical Index for Worth County
"History of Mitchell & Worth Counties, 1883," Surname Index for Worth County
"History of Mitchell & Worth Counties Vol. 2, 1918," Biographical Index for Worth County
"The Semi-Centenial Souvenir of Northwood, Iowa" Table of Contents
Social Security Death Index for Worth County, Iowa