Keywords: Photograph with caption "Dam No. 6, General view of temporary bridge over main lock." - NARA - 282430.jpg Scope and content General notes 282430 Local identifier War Department Office of the Chief of Engineers St Paul District 1866 - 09/18/1947 NARA's Great Lakes Region Chicago NRDA 7358 South Pulaski Road Chicago IL 60629-5898 1935-02-06 Record group Record Group 77 Records of the Office of the Chief of Engineers 1789 - 1999 Record group ARC 406 Operations and Maintenance Files Relating to Lock and Dam Numbers 3-10 of the Mississippi River Nine Foot Channel Project compiled 1931 - 1943 Series ARC 282367 File unit 406 1 Misc Corr --L D 4 ca 1931 - ca 1943 File unit ARC 282428 Variant control numbers NAIL Control Number NRDC-77-SLD3-406 1 MISCCORR-1 Other versions <gallery> File Photograph_with_caption_ Dam_No _6 _General_view_of_temporary_bridge_over_main_lock _-_NARA_-_282430 tif tif File Photograph_with_caption_ Dam_No _6 _General_view_of_temporary_bridge_over_main_lock _-_NARA_-_282430 jpg jpg </gallery> NARA-cooperation PD-USGov Temporary bridges |