Keywords: WATER FILTERS AT THE BACK RIVER SEWAGE TREATMENT PLANT WHICH SERVES THE BALTIMORE AREA - NARA - 546907.jpg Scope and content General notes 546907 Local identifier 412-DA-4420 Environmental Protection Agency 12/02/1970 - NARA-Author Pickerell Jim 1936- Photographer 4588217 <br /> Baltimore Md 4200974 39 283 -76 6 <br /> Still Picture Records Section Special Media Archives Services Division NWCS-S National Archives at College Park 8601 Adelphi Road College Park MD 20740-6001 02/1973 Record group Record Group 412 Records of the Environmental Protection Agency 1944 - 2006 Record group ARC 708 DOCUMERICA The Environmental Protection Agency's Program to Photographically Document Subjects of Environmental Concern compiled 1972 - 1977 Series ARC 542493 File unit File unit ARC Variant control numbers Agency-Assigned Identifier 074/40/004420<br /> NAIL Control Number NWDNS-412-DA-4420 Other versions <gallery> File WATER_FILTERS_AT_THE_BACK_RIVER_SEWAGE_TREATMENT_PLANT_WHICH_SERVES_THE_BALTIMORE_AREA_-_NARA_-_546907 tif tif File WATER_FILTERS_AT_THE_BACK_RIVER_SEWAGE_TREATMENT_PLANT_WHICH_SERVES_THE_BALTIMORE_AREA_-_NARA_-_546907 jpg jpg </gallery> NARA-cooperation PD-USGov Back River Wastewater Treatment Plant Rivers of Maryland |