Keywords: WATER FILTERS AT THE BACK RIVER SEWAGE TREATMENT PLANT, A PRIMARY TREATMENT FACILITY FOR THE BALTIMORE AREA - NARA - 546895.tif Scope and content General notes 546895 Local identifier 412-DA-4408 Environmental Protection Agency 12/02/1970 - NARA-Author Pickerell Jim 1936- Photographer 4588217 <br /> Baltimore Baltimore Independent City Maryland United States North and Central America inhabited place 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 074/28/004408<br /> NAIL Control Number NWDNS-412-DA-4408 yes Other versions <gallery> File WATER_FILTERS_AT_THE_BACK_RIVER_SEWAGE_TREATMENT_PLANT _A_PRIMARY_TREATMENT_FACILITY_FOR_THE_BALTIMORE_AREA_-_NARA_-_546895 tif tif File WATER_FILTERS_AT_THE_BACK_RIVER_SEWAGE_TREATMENT_PLANT _A_PRIMARY_TREATMENT_FACILITY_FOR_THE_BALTIMORE_AREA_-_NARA_-_546895 jpg jpg </gallery> NARA-cooperation PD-USGov Back River Wastewater Treatment Plant NARA TIF images with categorized JPGs |