MULTIPLE COUNTIES

• Airway Beacon System, 1934-1979 (Multiple Counties)
  
• Black Montana's Heritage Places (Multiple Counties)
  
• Bridges, Historic Steel Stringer and Steel Girder 1901-1961 (Multiple Counties)
  
• Bridges, Historic Steel Truss MPD (Multiple Counties)
  
• Bridges, Historic Timber Stringer MPD (Multiple Counties)
  
• Bridges, Reinforced Concrete MPD (Multiple Counties)
  
• Fire Lookouts, USFS Northern Region 1 1932-1967 MPD (Multiple Counties)
  
• Post Offices in Montana 1900-1941 MPD (Multiple Counties)
  
• Roadside Architecture, US Highway 2 MPD (Multiple Counties)
  
• Whoop-Up Trail (Multiple Counties)
  
• Mission 66 MPD 
  
• Montana Modern: Post World War II Architectural Survey and Inventory

BIG HORN

• Hardin MPD (Big Horn Co)
  
• Lodge Grass MPD (Big Horn Co)

CASCADE - CARBON 

• Korpivarra MPD (Cascade Co)
  
• Bridger MPD (Carbon Co)
  
• Fromberg MPD (Carbon Co)
  
• Joliet MPD (Carbon Co)

DAWSON - DEERLODGE

• Glendive MPD (Dawson Co)
  
• Anaconda MPD (Deer Lodge Co)

FLATHEAD - FERGUS

• Kalispell 1 MPD (Flathead Co)
  
• Kalispell 2 MPD (Flathead Co)
  
• Lake McDonald Recreation Camps MPD (Flathead Co)
  
• Lewistown MPD (Fergus Co)
  
• Lewistown, Stone Buildings MPD (Fergus Co)

GALLATIN - GLACIER - GLACIER NP

• Bozeman MPD (Gallatin Co)
  
• Schools, One Room in Gallatin County MPD (Gallatin Co)
  
• West Yellowstone MRA (Gallatin Co)
  
• Willow Creek MPD (Gallatin Co)
  
• Glacier National Park MPD (Glacier Co)
  
• Glacier National Park MRA (Glacier Co)
  
• Glacier National Park Amendment MPL
  
• Glacier National Park Architecture MRA
  
• Glacier National Park, Settlement on North Fork Flathead River MPD (Flathead Co)

LEWIS AND CLARK

• African American Heritage Places in Helena (Lewis and Clark Co)
• Upper Missouri River Corridor, Archeological Resources (Lewis and Clark Co)

MADISON - MISSOULA

• Pony MPD (Madison Co) 
• Alberton MPD (Missoula Co)
• Missoula MPD (Missoula Co)

RAVALLI - ROSEBUD

• Hamilton MPD (Ravalli Co)
• Hamilton MRA (Ravalli Co)
  
• Stevensville MPD (Ravalli Co)
• Forsyth MPD (Rosebud Co)

SANDERS - SILVERBOW

• Thompson Falls MPD (Sanders Co)
• Archaeology in Sheridan County MPD (Sheridan Co)
  
• Schools, Suburban in Butte (Silverbow Co)

PARK

• Livingston Commercial District (Park Co)

VALLEY

• Fort Peck Townsite and Dam MPD (Valley Co)