K&E Field Engineer’s Book 361
“Tables for Excavations and Embankments,” from the K&E Field Engineer’s Book 361. Made by Keuffel & Esser Co., NY. Used in 1906 for railroad survey work.
“Tables for Excavations and Embankments,” from the K&E Field Engineer’s Book 361. Made by Keuffel & Esser Co., NY. Used in 1906 for railroad survey work.