"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. مؤرشف من الأصل في 2017-02-25. اطلع عليه بتاريخ 2015-06-24.
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. مؤرشف من الأصل في 2020-06-18. اطلع عليه بتاريخ 2015-06-24.
"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. مؤرشف من الأصل في 2017-02-25. اطلع عليه بتاريخ 2015-06-24.
"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. مؤرشف من الأصل في 2017-02-25. اطلع عليه بتاريخ 2015-06-24.
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. مؤرشف من الأصل في 2020-06-18. اطلع عليه بتاريخ 2015-06-24.
"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. مؤرشف من الأصل في 2017-02-25. اطلع عليه بتاريخ 2015-06-24.
