"Carpenter, Louis George, Educator". The Twentieth Century Biographical Dictionary of Notable Americans ... Volume 2 of The Twentieth Century Biographical Dictionary of Notable Americans by Rossiter Johnson, John Howard Brown - published by the Biographical Society. 1904. Retrieved 24 June 2015.
De Puy, William Harrison (1908). "Carpenter, Louis George, Engineer". The World-wide Encyclopedia and Gazetteer: Compiled and Revised to Date from the Leading Encyclopedias of the World. A Dictionary of Arts, Sciences and Literature, to which is Added Biographies of Living Subjects, One Hundred Colored Maps and Numerous Illustrations, William Harrison De Puy - Volume 9 - Page 720 - published by The Christian Herald. Retrieved 24 June 2015.
"Carpenter, Louis George, Engineer". New American Supplement to the New Werner Twentieth Century Edition of the Encyclopædia Britannica ... Illustrated with Hundreds of Portraits and Other Engravings, Volume 2 New American Supplement to the New Werner Twentieth Century Edition of the Encyclopædia Britannica ... Illustrated with Hundreds of Portraits and Other Engravings - published by the Werner Company. 1905. Retrieved 24 June 2015.
