Keywords: Photograph with caption "Rock and brush protection mattress, L-D No. 8...Start of sinking 50 ft. mat below tainter... - NARA - 282413.jpg Scope and content General notes 282413 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 1940-09-14 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 813a 1 Miscellaneous Correspondence ca 1931 - ca 1943 File unit ARC 282409 Variant control numbers NAIL Control Number NRDC-77-SLD3-813A 1 -GOF4 Other versions <gallery> File Photograph_with_caption_ Rock_and_brush_protection_mattress _L-D_No _8 Start_of_sinking_50_ft _mat_below_tainter _-_NARA_-_282413 tif tif File Photograph_with_caption_ Rock_and_brush_protection_mattress _L-D_No _8 Start_of_sinking_50_ft _mat_below_tainter _-_NARA_-_282413 jpg jpg </gallery> NARA-cooperation PD-USGov Mississippi River Lock and Dam number 8 |