1 ► Alabama, Dallas County, Cahaba — Perine Well — Reported permanently removed

2 ► Alabama, Madison County, Huntsville, Monte Sano State Park — Classroom at the Lake —

3 ► Alabama, Madison County, Huntsville, Quigley — Mid-1800s bricks —

4 ► Alabama, Montgomery County, Montgomery — Original Iron Fence —

5 ► Alabama, Morgan County, Decatur — Beauty and Hope — Restoring the Vision...Preserving The Legacy —

6 ► Alaska, Denali Borough, Denali National Park and Preserve — Living, Breathing History —

7 ► Alaska, Fairbanks North Star Borough, College — The Cornerstone: A Symbol —

8 ► Alaska, Fairbanks North Star Borough, College — The Cornerstone's Origin —

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9 ► Alaska, Fairbanks North Star Borough, College, Pike's Landing — Bear Cache & Alaskan Cabins —

10 ► Alaska, Fairbanks North Star Borough, Fairbanks — Model Dredge —

11 ► Alaska, Fairbanks North Star Borough, Fairbanks — Placer Drill —

12 ► Alaska, Fairbanks North Star Borough, Fairbanks — Steam Operated Shovel —

13 ► Alaska, Matanuska-Susitna Borough, Sutton-Alpine — Wall Tent —

14 ► Alaska, Skagway Borough, Skagway — Goat Lake Hydroelectric Project — Licensed July 15, 1996 — FERC Project No. 11077 —

15 ► Alaska, Southeast Fairbanks Census Area, Big Delta — Windmill —

16 ► Alaska, Southeast Fairbanks Census Area, Delta Junction — Alaskan Ingenuity —

17 ► Alaska, Southeast Fairbanks Census Area, Delta Junction — Trans Alaska Pipeline "Pig" —

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18 ► Alaska, Southeast Fairbanks Census Area, Deltana — Resetting succession for wildlife —

19 ► Arizona, Coconino County, Flagstaff — The Sundial —

20 ► Arizona, Coconino County, Moccasin — #3 Bell —

21 ► Arizona, Coconino County, Page — 1872 Irrigation —

22 ► Arizona, Mohave County, Hoover Dam — Then and Now —

23 ► Arizona, Navajo County, Winslow — The First Street Windmill —

24 ► Arkansas, Jefferson County, Pine Bluff — Dedicated to Miss Willie K. Hocker — Reported missing

25 ► Arkansas, Jefferson County, Pine Bluff — Dedicated to Miss Willie K. Hocker — Reported missing

26 ► California, El Dorado County, South Lake Tahoe — Tea Time at the Gazebo —

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27 ► California, Inyo County, Death Valley National Park — Keane Wonder Mine — Reported permanently removed

28 ► California, Kern County, the Mojave Desert — Burro Schmidt Tunnel —

29 ► California, Kings County, Lemoore — 206 — El Adobe de Los Robles Ranchos —

30 ► California, Los Angeles County, Agua Dulce — Pacific Crest Trail — Vasquez Rocks —

31 ► California, Los Angeles County, Angeles National Forest — The “Ridge Route” — California Historic Civil Engineering Landmark — Constructed 1914-1915 —

32 ► California, Los Angeles County, Azusa — Bridge to Nowhere —

33 ► California, Los Angeles County, Los Angeles, Downtown Los Angeles — Sylmar Tunnel Disaster — Honoring The Lives —

34 ► California, Los Angeles County, Los Angeles, Hancock Park — 94 — Highland Avenue Medians —

35 ► California, Los Angeles County, Los Angeles, Mission Hills — Mission Dam —

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36 ► California, Los Angeles County, Los Angeles, Northridge — Earthquake Garden — Lauretta Wasserstein Sculpture Garden — “Post-Tension” —

37 ► California, Los Angeles County, Los Angeles, San Pedro — 187 — Korean Friendship Bell —

38 ► California, Los Angeles County, Los Angeles, Santa Clarita — 1006 — Beale's Cut — Reported missing

39 ► California, Los Angeles County, Los Angeles, Sylmar — 50 — Mission Wells —

40 ► California, Los Angeles County, Los Angeles, Van Nuys — Van Nuys Airport — In Honor of Pioneer Aviators —

41 ► California, Los Angeles County, Los Angeles, Westwood — Ornamental Streetlight —

42 ► California, Los Angeles County, Los Angeles, Woodland Hills — 939 — Old Trapper's Lodge —

43 ► California, Los Angeles County, Marina del Rey — The Helmsman —

44 ► California, Los Angeles County, Santa Clarita, Angeles National Forest — Before the Dam — Saint Francis Dam Disaster National Memorial and National Monument — An Area Rich in History —

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45 ► California, Los Angeles County, Santa Clarita, Angeles National Forest — Construction of the Dam — Saint Francis Dam Disaster National Memorial and National Monument — Unforseen Issues —

46 ► California, Los Angeles County, Santa Clarita, Angeles National Forest — Geology of the Canyon — Saint Francis Dam Disaster National Memorial and National Monument — The Role of Geology —

47 ► California, Los Angeles County, Santa Clarita, Angeles National Forest — Night of the Disaster — Saint Francis Dam Disaster National Memorial and National Monument — Tirelessly Getting the Word Out —

48 ► California, Los Angeles County, Santa Clarita, Angeles National Forest — Power Plant No. 1 — First Los Angeles Aqueduct —

49 ► California, Los Angeles County, Santa Clarita, Angeles National Forest — St. Francis Dam —

50 ► California, Los Angeles County, Santa Clarita, Angeles National Forest — St. Francis Dam Disaster Site — Reported missing

51 ► California, Los Angeles County, Santa Clarita, Angeles National Forest — 919 — St. Francis Dam Disaster Site —

52 ► California, Los Angeles County, Santa Clarita, Angeles National Forest — The Aftermath — Saint Francis Dam Disaster National Memorial and National Monument — In the Wake of Disaster —

53 ► California, Los Angeles County, Santa Clarita, Angeles National Forest — The Lives That Were Lost — Saint Francis Dam Disaster National Memorial and National Monument — Over 400 Lives Lost the Night of the Disaster —

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54 ► California, Los Angeles County, Santa Clarita, Angeles National Forest — Water Wars — Saint Francis Dam Disaster National Memorial and National Monument — California Politics & Violence —

55 ► California, Los Angeles County, Santa Clarita, Angeles National Forest — William Mulholland — Saint Francis Dam Disaster National Memorial and National Monument — Providing Water to LA —

56 ► California, Los Angeles County, Santa Clarita, Stevenson Ranch — 516 — First Commercial Oil Well In California — Pico #4 —

57 ► California, Marin County, Samuel P. Taylor Park, Lagunitas — Paper Mill Dam and Fish Ladder —

58 ► California, Orange County, Huntington Beach — World's Largest Surfboard —

59 ► California, Orange County, Rancho Mission Viejo — Bruce M. Phillips — In Memory of — 1957 - 2021 —

60 ► California, Orange County, Santa Ana, Downtown — El Camino Real Bell —

61 ► California, Riverside County, Mountain Center — 122 — Historic Lake Hemet Dam —

62 ► California, Riverside County, Riverside, Downtown Riverside — The Nanjing Bell —

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63 ► California, Sacramento County, Sacramento, Old Sacramento — 780 — First Transcontinental Railroad Groundbreaking Site — Reported permanently removed

64 ► California, Sacramento County, Sacramento, Old Sacramento — Sacramento Water Works — Historic Civil Engineering Landmark —

65 ► California, San Bernardino County, Joshua Tree National Park — Barker Dam —

66 ► California, San Bernardino County, Redlands, South Redlands — The Redlands Liberty Pole —

67 ► California, San Diego County, San Diego — Providing Year-Round Water — Old Mission Dam —

68 ► California, San Diego County, San Diego, Point Loma — High and Dry —

69 ► California, Santa Barbara County, Solvang — Mission Reservoir — 1804 —

70 ► California, Solano County, Vallejo — An Island Built of Mud —

71 ► California, Solano County, Vallejo — Mare Island - A Place of "Firsts" —

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72 ► California, Solano County, Vallejo — The Carquinez Strait: Gateway to California's Riches —

73 ► California, Solano County, Vallejo — The Western Magazine —

74 ► California, Ventura County, Ventura — 114 — El Caballo — Mission Aqueduct —

75 ► California, Ventura County, Ventura — 114-1 — Rancho Cañada Larga — Mission Aqueduct —

76 ► California, Ventura County, Ventura — 28 — San Buenaventura Mission Aqueduct —

77 ► Colorado, El Paso County, Manitou Springs — Manitou and Pike's Peak Cog Railway —

78 ► Colorado, Grand County, Granby — Against the Flow —

79 ► Colorado, Grand County, Granby — Not Even Ghosts, But Rather Phantoms —

80 ► Colorado, Jefferson County, Arvada, Olde Town Arvada — Arvada Water Tower — Historic Olde Town Walking Tour —

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81 ► Colorado, Jefferson County, Golden — Welcome to Golden Arch — Downtown Landmark —

82 ► Colorado, Jefferson County, Golden — What's that "M"? —

83 ► Colorado, Larimer County, Fort Collins, Old Town West — Larimer County Courthouse Cornerstones —

84 ► Connecticut, Capitol Region, Farmington, Unionville — An Industrial History of Unionville, 1780-1880 —

85 ► Connecticut, Capitol Region, Farmington, Unionville — The Water Fountain —

86 ► Connecticut, Capitol Region, New Britain — GR2 — Tales from the City / New Britain Water Department — / An engineering marvel — New Britain Historic Walking Trail —

87 ► Connecticut, Capitol Region, Rocky Hill — Bulkeley Mill Dam — 1875 —

88 ► Connecticut, Northwest Hills Region, Torrington — Garden Statue —

89 ► Connecticut, South Central Region, Guilford, Guilford Center — Fire Wells on the Guilford Green —

90 ► District of Columbia, Washington, Northeast Washington, Kingman and Heritage Islands — Welcome to Kingman & Heritage Islands — Reported damaged

91 ► District of Columbia, Washington, Northeast Washington, Kingman and Heritage Islands — Welcome to Kingman & Heritage Islands —

92 ► District of Columbia, Washington, Northwest Washington, 16th Street Heights — 3 — Hold the Mayo! — Battleground to Community — Brightwood Heritage Trail — Reported missing

93 ► District of Columbia, Washington, Northwest Washington, 16th Street Heights — 2 — Mayor Emery and the Union Army — Battleground to Community — Brightwood Heritage Trail — Reported missing

94 ► District of Columbia, Washington, Northwest Washington, Adams Morgan — 11 — Walter Pierce Park — Roads to Diversity — Adams Morgan Heritage Trail —

95 ► District of Columbia, Washington, Northwest Washington, Columbia Heights — 7 — Nob Hill — Cultural Convergence — Columbia Heights Heritage Trail —

96 ► District of Columbia, Washington, Northwest Washington, Downtown — 3 — Power Brokers — Midcity at the Crossroads — Shaw Heritage Trail — Reported permanently removed

97 ► District of Columbia, Washington, Northwest Washington, LeDroit Park — 3 — A Voice from the South — Worthy Ambition — LeDroit Park/Bloomingdale Heritage Trail —

98 ► District of Columbia, Washington, Northwest Washington, LeDroit Park — 2 — T Street Elites — Worthy Ambition — LeDroit Park/Bloomingdale Heritage Trail —

99 ► District of Columbia, Washington, Northwest Washington, Tenleytown — 5 — Fort Reno — Top of the Town — Tenleytown Heritage Trail —

100 ► District of Columbia, Washington, Northwest Washington, The Ellipse — The National Christmas Tree — President's Park — National Park Service, U.S. Department of the Interior — Reported permanently removed

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