Maryland Geological Survey
State Geological Survey, 1834-1841
State Geological & Economic Survey, 1896-1941
Board of Natural Resources, Department of Geology, Mines, & Water Resources, 1941-64
Board of Natural Resources, Maryland Geological Survey, 1964-69
Department of Natural Resources, Maryland Geological Survey, 1969-92
Department of Natural Resources, Resource Management, Maryland Geological Survey, 1992-95
Department of Natural Resources, Chesapeake Bay & Watershed Programs, Resource Assessment Administration, Maryland Geological Survey, 1995
Department of Natural Resources, Chesapeake Bay & Watershed Programs, Resource Assessment Service, Maryland Geological Survey, 1995-
Natural Resources Police Force
State Oyster Police Force, 1868-74
Commissioner of Fisheries, State Fishery Force, 1874-80
Board of Public Works, State Fishery Force, 1880-1922
Conservation Department, Maryland Patrol & Inspection Fleet, 1922-39
Board of Natural Resources, Department of Tidewater Fisheries, Division of Inspection & Patrol, 1941-62
Board of Natural Resources, Department of Tidewater Fisheries, Maryland State Marine Police, 1962-64
Board of Natural Resources, Department of Chesapeake Bay Affairs, Maryland State Marine Police, 1964-69
Department of Natural Resources, Maryland State Marine Police, 1969-72
Department of Natural Resources, Natural Resources Police Force, 1972-92
Department of Natural Resources, Resource Management, Natural Resources Police Force, 1992-95
Department of Natural Resources, Public Lands, Natural Resources Police Force, 1995-
Resource Assessment Service
Fish Commissioners, 1870-1916
Conservation Commission, 1916-41
Conservation Department, 1922-32
Conservation Department, Chesapeake Biological Laboratory, 1922-41
Board of Natural Resources, Department of Tidewater Fisheries, 1941-64
Board of Natural Resources, Department of Chesapeake Bay Affairs, 1964-69
Department of Natural Resources, Department of Chesapeake Bay Affairs, 1969-72
Department of Natural Resources, Fisheries Administration, 1972-79
Department of Natural Resources, Tidewater Administration, 1979-92
Department of Natural Resources, Resource Management, Tidewater Administration, 1992-95
Department of Natural Resources, Chesapeake Bay & Watershed Programs, Resource Assessment Administration, 1995
Department of Natural Resources, Chesapeake Bay & Watershed Programs, Resource Assessment Service, 1995-
Fisheries Service
State Game Warden, 1896-1922
Conservation Commission, 1922-35
Conservation Department, 1935-39
Department of Game & Inland Fish, 1939-41
Board of Natural Resources, Department of Game & Inland Fish, 1941-69
Department of Natural Resources, Department of Game & Inland Fish, 1969-70
Department of Natural Resources, Fish & Wildlife Administration, 1970-72
Department of Natural Resources, Wildlife Administration, 1972-84
Department of Natural Resources, Forest, Park & Wildlife Service, 1984-92
Department of Natural Resources, Resource Management, Fish, Heritage, & Wildlife Administration, 1992-95
Department of Natural Resources, Resource Management Services, Fish, Heritage, & Wildlife Administration, 1995
Department of Natural Resources, Resource Management Service, Fisheries Service, 1995-
Forest, Wildlife & Heritage Service
State Game Warden, 1896-1922
Conservation Commission, 1922-35
Conservation Department, 1935-39
Department of Game & Inland Fish, 1939-41
Board of Natural Resources, Department of Game & Inland Fish, 1941-69
Department of Natural Resources, Department of Game & Inland Fish, 1969-70
Department of Natural Resources, Fish & Wildlife Administration, 1970-72
Department of Natural Resources, Wildlife Administration, 1972-84
Department of Natural Resources, Forest, Park & Wildlife Service, 1984-92
Department of Natural Resources, Resource Management, Fish, Heritage, & Wildlife Administration, 1992-95
Department of Natural Resources, Resource Management Services, Fish, Heritage, & Wildlife Administration, 1995
Department of Natural Resources, Resource Management Service, Forest, Wildlife & Heritage Service, 1995-
State Forest & Park Service
Board of Forestry, 1906-41
Board of Natural Resources, Department of Forests & Parks, 1941-69
Department of Natural Resources, Department of Forests & Parks, 1969-72
Department of Natural Resources, Forest Service, 1972-82
Department of Natural Resources, Park Service, 1972-82
Department of Natural Resources, Forest & Park Service, 1982-84
Department of Natural Resources, Forest, Park & Wildlife Service, 1984-91
Department of Natural Resources, Public Lands, State Forest & Park Service, 1991-92
Department of Natural Resources, Public Lands & Forestry, State Forest & Park Service, 1992-95
Department of Natural Resources, Public Lands, State Forest & Park Service, 1995-
Forest Service
Board of Natural Resources, Forest Conservancy Districts Program, 1943-69
Department of Natural Resources, Forest Conservancy Districts Program, 1969-71
Department of Natural Resources, Technical Forestry Reforestation Program, 1971-79
Department of Natural Resources, Cooperative Forest Management, 1979-83
Department of Natural Resources, Cooperative Forestry Program, 1983-91
Department of Natural Resources, Forestry Programs, 1991-92
Department of Natural Resources, Public Lands & Forestry, Forest Service, 1992-95
Department of Natural Resources, Resource Management Services, Forest Service, 1995
Department of Natural Resources, Resource Management Service, Forest, Wildlife & Heritage Service, Forest Service, 1995-
Chesapeake Bay & Watershed Programs
Department of the Environment, Water Management Administration, Chesapeake Bay & Watershed Programs, 1987-92
Department of the Environment, Chesapeake Bay & Watershed Management Administration, 1992-95
Department of Natural Resources, Chesapeake Bay & Watershed Programs, 1995-
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