1 ► Montana, Beaverhead County, Dillon — The First Electric Gold Dredge —

Near Bannack Road near State Highway 278, on the left when traveling east.

2 ► Montana, Beaverhead County, Grant — "Most Distant Fountain" of the Mighty Missouri —

Near Lemhi Pass Road near Forest Road 158, on the left when traveling south.

3 ► Montana, Beaverhead County, Grant — The Beginning of the "Endless Missouri" —

Near Lemhi Pass Road near Forest Road 158, on the left when traveling south.

4 ► Montana, Big Horn County, Hardin — Captain Grant Marsh —

On Grant Marsh Loop (Road 147) near State Highway 47.

5 ► Montana, Broadwater County, Toston — Lewis and Clark Trail —

On Toston Dam Road.

6 ► Montana, Broadwater County, Townsend — Canyon Ferry —

On U.S. 287 near Springville Lane, on the right when traveling north.

7 ► Montana, Broadwater County, Townsend — Crimson Bluffs — "...a remarkable bluff of a crimson coloured earth...." —

On River Road near Deer Path, on the right when traveling north.

8 ► Montana, Carbon County, Bridger — Jim Bridger, Mountain Man —

On U.S. 310.

9 ► Montana, Cascade County, Great Falls — A "great" Set of Falls —

Near Giant Springs Road, 0.9 miles north of River Drive North.

10 ► Montana, Cascade County, Great Falls — Black Eagle Falls —

On River Drive North, 0.4 miles east of 25th Street North, on the right when traveling west.

11 ► Montana, Cascade County, Great Falls — Captain Lewis Arrives at the Great Falls —

Near Ryan Dam Road.

12 ► Montana, Cascade County, Great Falls — Formation of the Gorge and Falls —

Near Ryan Dam Road, 1.6 miles south of Morony Dam Road.

13 ► Montana, Cascade County, Great Falls — From Water Comes Power —

Near Ryan Dam Road.

14 ► Montana, Cascade County, Great Falls — Lewis & Clark Portage Route — June - July 1805 - July, 1806 —

On 10th Avenue South (U.S. 87) near 50th Street South, on the right when traveling west.

15 ► Montana, Cascade County, Great Falls — Pure Springs Along the Missouri River —

Near Giant Springs Road, 1.3 miles north of River Drive North, on the left when traveling north.

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16 ► Montana, Cascade County, Great Falls — The Army's Navy —

Near Giant Springs Road near River Drive North.

17 ► Montana, Cascade County, Great Falls — The Experiment —

Near Giant Springs Road near River Drive North, on the left when traveling east.

18 ► Montana, Cascade County, Great Falls — The Falls: Obstacle or Opportunity —

Near Overlook Drive south of 10th Avenue South (Business Interstate 15), on the right when traveling west.

19 ► Montana, Cascade County, Great Falls — The Portage Around the Falls —

Near Overlook Drive south of 10th Avenue South (Business Interstate 15), on the right when traveling west.

20 ► Montana, Cascade County, Great Falls — These Springs Have Witnessed... —

Near Giant Springs Road, 1.3 miles north of River Drive North, on the left when traveling north.

21 ► Montana, Chouteau County, Carter — Great Falls of the Missouri

On U.S. Highway 87 at Carter Road (U.S. 87), on the right when traveling west on U.S. Highway 87. Reported damaged.

22 ► Montana, Chouteau County, Fort Benton — Coulson's Steamboat Offices — Coulson Steamboat Lines Largest Company of the Upper River —

On River Street near 11th Street, on the right when traveling north.

23 ► Montana, Chouteau County, Fort Benton — First Fire Engine House —

On Front Street near 15th Street, on the right when traveling east.

24 ► Montana, Chouteau County, Fort Benton — Fort Benton —

On U.S. 87 near County Road 386, on the right when traveling north.

25 ► Montana, Chouteau County, Fort Benton — Fort Benton Historic District —

On Front Street near 18th Street, on the left when traveling north.

26 ► Montana, Chouteau County, Fort Benton — Fort Benton Levee —

On Front Street near 14th Street, on the right when traveling north.

27 ► Montana, Chouteau County, Fort Benton — Grand Union Hotel —

On Front Street at 14th Street on Front Street.

28 ► Montana, Chouteau County, Fort Benton — Grasshoppers in the River? — Perils of Steamboating on the Missouri —

Near 7th Street near River Street.

29 ► Montana, Chouteau County, Fort Benton — I.G. Baker Home —

On Front Street near 17th Street, on the right when traveling north.

30 ► Montana, Chouteau County, Fort Benton — June 6, 1908 —

On Front Street near 15th Street, on the right when traveling east.

31 ► Montana, Chouteau County, Fort Benton — Keelboat Mandan —

On Front Street near 17th Street, on the right when traveling north.

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32 ► Montana, Chouteau County, Fort Benton — Most Progressive in Montana — First in Montana —

On River Street near 8th Street, on the right when traveling north.

33 ► Montana, Chouteau County, Fort Benton — Steamboat Navigation —

On U.S. 87 near County Road 386, on the right when traveling north.

34 ► Montana, Chouteau County, Fort Benton — Steamboat Relics —

On Front Street near 18th Street.

35 ► Montana, Chouteau County, Fort Benton — Stream Flow Monitoring —

On Front Street near 15th Street, on the right when traveling east.

36 ► Montana, Chouteau County, Fort Benton — T.C. Power & Bro. —

On Front Street at 17th Street, on the right when traveling north on Front Street.

37 ► Montana, Custer County, Miles City — Riverside Park Steamboats — Miles City Walking Path —

Near Main Street near South 5th Street, on the right when traveling east.

38 ► Montana, Custer County, Miles City — The Tongue River —

On Business Interstate 94 near Garryowen Road, on the right when traveling south.

39 ► Montana, Dawson County, Glendive — Clark's Footprints To Eastern Montana's Future — Clark on the Yellowstone —

On Montana Avenue just north of State Street, on the left when traveling north.

40 ► Montana, Dawson County, Glendive — Evidence Of The Expedition — Clark on the Yellowstone —

On Montana Avenue just north of State Street, on the left when traveling north.

41 ► Montana, Dawson County, Glendive — Returning To The Plains — Clark on the Yellowstone —

On Montana Avenue just north of State Street, on the left when traveling north.

42 ► Montana, Dawson County, Glendive — The Yellowstone River —

On Bad Route Road (Road 235) near Interstate 94, on the left when traveling south.

43 ► Montana, Fergus County, Lewistown — Mackey Building (Montana Tavern) — Lewistown Central Business Historic District —

On West Main Street (U.S. 87) at 2nd Avenue North, on the right when traveling west on West Main Street.

44 ► Montana, Fergus County, Roy — The Mighty Missouri - Lifeblood of the Plains —

Near U.S. 191, on the right when traveling north.

45 ► Montana, Fergus County, Winifred — The Judith Landing —

On PN Bridge Road (State Highway 236), on the right when traveling south.

46 ► Montana, Flathead County, Kalispell — Conrad Mansion — Historic Site Museum —

On Woodland Avenue near 3rd Street East, on the right when traveling south.

47 ► Montana, Flathead County, Kalispell — Dunsire House — East Side Historic District —

On 2nd Avenue East at 6th Street East, on the right when traveling south on 2nd Avenue East.

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48 ► Montana, Flathead County, West Glacier — Historic Boats —

Near Lake McDonald Lodge Loop, 0.1 miles west of Going-To-The-Sun-Road.

49 ► Montana, Gallatin County, Bozeman — Lewis and Clark — To the Headwaters —

Near N. 19th Avenue near I-90 eastbound entrance ramp (at milepost 305), 0.1 miles east of N. 19th Ave. and E. Valley Center Rd., on the left when traveling south.

50 ► Montana, Gallatin County, Three Forks — Colter’s Run —

On Trident Road (State Highway 296), on the right when traveling north.

51 ► Montana, Gallatin County, Three Forks — Gallatin City — First and Second —

On Frontage Road (County Route 205), on the right when traveling east.

52 ► Montana, Gallatin County, Three Forks — Jefferson’s Instructions to Lewis and Clark — July 4th, 1803 —

On Trident Road (County Route 286), on the left when traveling north.

53 ► Montana, Gallatin County, Three Forks — Lewis & Clark Arrive at the Headwaters July, 1805 —

On North Main Street at Cottonwood, on the left when traveling north on North Main Street.

54 ► Montana, Gallatin County, Three Forks — Lewis and Clark reach the Headwaters — July 25 & July 27, 1805 —

Near Trident Road.

55 ► Montana, Gallatin County, Three Forks — Missouri River Headwaters —

On Frontage Road (County Route 205), on the right when traveling east.

56 ► Montana, Gallatin County, Three Forks — The Naming of a River — The Headwaters of the Missouri River —

On Trident Road (County Route 286), on the left when traveling north.

57 ► Montana, Gallatin County, Three Forks — The Upper Missouri — Along the route of Lewis & Clark —

Near Trident Road near Carpenter Road, on the left when traveling north.

58 ► Montana, Lewis and Clark County, Craig — "nearer than the route we Came" —

On Interstate 15 at milepost 240 near Bald Eagle Drive, on the right when traveling south.

59 ► Montana, Lewis and Clark County, Craig — The Dearborn – Ancient Interstate Highway — A shortcut missed —

On Marshall Lane near Craig Frontage Road.

60 ► Montana, Lewis and Clark County, Helena — U.S.S. Helena —

Near South Last Chance Gulch near East Broadway Street, on the right when traveling north.

61 ► Montana, Lewis and Clark County, Wolf Creek — Remembering Governor Forrest H. Anderson —

On Frank Street near Bridge Street, on the left when traveling south.

62 ► Montana, Madison County, Twin Bridges — "...a handsome little river..." —

Near Fairgrounds Loop Road near State Highway 41.

63 ► Montana, Madison County, Twin Bridges — Which way did they go? —

Near Fairgrounds Loop Road at State Highway 41.

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64 ► Montana, McCone County, Brockway — Fort Peck Dam and Lake —

On Highway 200 at milepost 248 at South Flowing Wells Road, on the left when traveling west on Highway 200.

65 ► Montana, Missoula County, Missoula — Name That River — Captain Lewis in the Missoula Valley —

Near Carousel Drive near South Higgins Avenue.

66 ► Montana, Missoula County, Missoula — Rattlesnake Creek —

Near Maurice Avenue north of South 5th Street East when traveling north.

67 ► Montana, Missoula County, Missoula — Twilight of an Era —

On Montana Highway East (State Highway 200) near 1st Street, on the right when traveling west.

68 ► Montana, Park County, Livingston — "Wide bold, rapid and deep" — Clark on the Yellowstone —

On River Drive near South Yellowstone Street, on the right when traveling west.

69 ► Montana, Park County, Livingston — Captain Clark and the Corps of Discovery on the Yellowstone —

On Interstate 90 at milepost 325, on the right when traveling east.

70 ► Montana, Park County, Livingston — Heading down the Yellowstone — Clark on the Yellowstone —

On U.S. 89 near Alpenglow Lane, on the right when traveling east.

71 ► Montana, Park County, Wilsall — Shields River Valley —

On U.S. 89, 0.5 miles south of Flathead Creek Road (State Highway 86), on the left when traveling south.

72 ► Montana, Powder River County, Broadus — The Powder River Country —

On U.S. 212 near Big Powder River East, on the left when traveling north.

73 ► Montana, Prairie County, Terry — Prairie County —

On Ten Mile Road just north of Park Street, on the left when traveling north.

74 ► Montana, Roosevelt County, Wolf Point — Wolf Point —

On U.S. 2 at Blaine Street, on the right when traveling east on U.S. 2.

75 ► Montana, Sanders County, Paradise — Coursing Through Miles Of Montana — Clark Fork Corridor: The River —

On State Highway 135, 1.2 miles south of State Highway 200, on the right when traveling south.

76 ► Montana, Sanders County, Paradise — The Earth's Blood Flows Past You — Clark Fork Corridor: The River —

On State Highway 135, 3.3 miles south of State Highway 200, on the right when traveling south.

77 ► Montana, Stillwater County, Columbus — Columbus —

Near Interstate 90 at milepost 419, on the right when traveling west.

78 ► Montana, Stillwater County, Columbus — Park City —

Near Interstate 90 at milepost 419, on the right when traveling east.

79 ► Montana, Stillwater County, Park City — The Great Inland Seaway —

On Interstate 90 at milepost 419,, 0.2 miles west of Ronan Ranch Road underpass beneath westbound I-90, on the left when traveling west.

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80 ► Montana, Sweet Grass County, Big Timber — Elk, Rochejhone, Yellowstone —

Near Howie Road near U.S. 191.

81 ► Montana, Sweet Grass County, Big Timber — The Wild River —

On Howie Road near U.S. 191, on the right when traveling west.

82 ► Montana, Sweet Grass County, Greycliff — Captain Wm. Clark —

On Interstate 90 at milepost 381,, 4 miles west of Bridger Creek Road and I-90 Interchange (Exit 384), on the right when traveling west.

83 ► Montana, Valley County, Fort Peck — Diverting the Mighty Missouri — Around Fort Peck Dam —

Near Yellowstone Road near Winter Harbor, on the left when traveling east.

84 ► Montana, Valley County, Fort Peck — Fort Peck Dam — A Symbol of Hope —

On Yager Road at State Highway 24, on the left when traveling south on Yager Road.

85 ► Montana, Valley County, Fort Peck — In Memory —

On Yaeger Road at State Highway 24, on the left when traveling north on Yaeger Road.

86 ► Montana, Valley County, Fort Peck — Powerful Afterthoughts — Hydroelectric Power at Fort Peck Dam —

Near Yellowstone Road near Winter Harbor, on the left when traveling east.

87 ► Montana, Valley County, Fort Peck — The Slide of '38 — The Day the Dam Gave Way —

On Yager Road at State Highway 24, on the left when traveling south on Yager Road.

88 ► Montana, Yellowstone County, Billings — Lewis and Clark Yellowstone River Journey —

On 6th Avenue North.

89 ► Montana, Yellowstone County, Billings, North Park — Where the River Meets the Rims —

Near Chief Black Otter Trail near Rimtop Drive.

90 ► Montana, Yellowstone County, Billings, South Side — All We Need is Some Water — Building the Big Ditch —

Near Montana Avenue (Business Interstate 90) near North 23rd Street, on the right when traveling east.

91 ► Montana, Yellowstone County, Billings, South Side — Steamboat City on the River — Coulson Bypassed by Railroad —

Near Montana Avenue (Business Interstate 90) near North 23rd Street, on the right when traveling east.

92 ► Montana, Yellowstone County, Billings, South Side — The Yellowstone River — The Lifeblood of the Plains —

On Montana Avenue (Business Interstate 90) near North 23rd Street.

93 ► Montana, Yellowstone County, Worden — Buffalo: Then and Now — August 1, 1806 Encampment —

Near State Highway 312 near South 31st Road, on the right when traveling west.

94 ► Montana, Yellowstone County, Worden — Clark's Canoe Camp on the Yellowstone, Archaeology Study —

Near State Highway 312 near South 31st Road, on the right when traveling west.

95 ► Montana, Yellowstone County, Worden — Injury Forces a Halt to Build Canoes — July 19, 1806 Canoe Camp —

Near State Highway 312 near South 31st Road, on the right when traveling west.

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96 ► Montana, Yellowstone County, Worden — Making Canoes, Then and Now —

On State Highway 312 near South 31st Road.

97 ► Montana, Yellowstone County, Worden — Preparations of Continuing the Trip — July 20-23, 1806 Canoe Camp —

Near State Highway 312 near South 31st Road, on the right when traveling west.

98 ► Montana, Yellowstone County, Worden — The "Yellowstone River" Walkway — Clark on the Yellowstone River — July 15-August 3, 1806 —

Near State Highway 312 near South 31st Road, on the right when traveling west.

99 ► Montana, Yellowstone County, Worden — Triumph and Torment — August 3, 1806 Encampment —

Near State Highway 312 near South 31st Road, on the right when traveling west.

100 ► Montana, Yellowstone County, Worden — Using Modern Mapping Technology to Help Solve a 200 Year-Old Mystery —

Near U.S. 312 near South 31st Road, on the right when traveling west.