THE HISTORICAL
MARKER DATABASE
“Bite-Size Bits of Local, National, and Global History”
 
 
 
 
 
 
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Historical Markers in Keystone

 
Clickable Map of Pennington County, South Dakota and Immediately Adjacent Jurisdictions image/svg+xml 2019-10-06 U.S. Census Bureau, Abe.suleiman; Lokal_Profil; HMdb.org; J.J.Prats/dc:title> https://commons.wikimedia.org/wiki/File:Usa_counties_large.svg Pennington County, SD (270) Custer County, SD (83) Haakon County, SD (5) Jackson County, SD (34) Lawrence County, SD (159) Meade County, SD (30) Oglala Lakota County, SD (3) Weston County, WY (21)  PenningtonCounty(270) Pennington County (270)  CusterCounty(83) Custer County (83)  HaakonCounty(5) Haakon County (5)  JacksonCounty(34) Jackson County (34)  LawrenceCounty(159) Lawrence County (159)  MeadeCounty(30) Meade County (30)  OglalaLakotaCounty(3) Oglala Lakota County (3)  WestonCountyWyoming(21) Weston County (21)
Rapid City is the county seat for Pennington County
Keystone is in Pennington County
Pennington County (270)  ►
ADJACENT TO PENNINGTON COUNTY
Custer County (83)  ►
Haakon County (5)  ►
Jackson County (34)  ►
Lawrence County (159)  ►
Meade County (30)  ►
Oglala Lakota County (3)  ►
Weston County, Wyoming (21)  ►
 
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1 ► South Dakota, Pennington County, Keystone — 40th Anniversary of "The Flood" —
2 ► South Dakota, Pennington County, Keystone — 40th Anniversary of "The Flood" —
3 ► South Dakota, Pennington County, Keystone — 1972 Battle Creek Flood —
4 ► South Dakota, Pennington County, Keystone — Abraham Lincoln — 16th President — 1861-1865 —
5 ► South Dakota, Pennington County, Keystone — After the Fire —
6 ► South Dakota, Pennington County, Keystone — Ancient Stone Circles — Mount Rushmore National Memorial —
7 ► South Dakota, Pennington County, Keystone — 3 — Big Thunder Gold Mine —
8 ► South Dakota, Pennington County, Keystone — Bill Durst — In Grateful Recognition of —
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9 ► South Dakota, Pennington County, Keystone — Black Elk Wilderness — A Spiritual Place — Black Hills National Forest —
10 ► South Dakota, Pennington County, Keystone — The Black Hills Central Railroad — 1893 —
11 ► South Dakota, Pennington County, Keystone — Carrie Ingalls Swanzey — Free Walking Tour — 3 Blocks East on Highway 40 —
12 ► South Dakota, Pennington County, Keystone — Celestial and Earthly Locations — Mount Rushmore National Memorial —
13 ► South Dakota, Pennington County, Keystone — 4 — Charles Upham and the Upham Saloon —
14 ► South Dakota, Pennington County, Keystone — Dr. E. L. Trudeau — 1845-1915 — by Gutzon Borglum —
15 ► South Dakota, Pennington County, Keystone — 713 — The Father of Mount Rushmore —
16 ► South Dakota, Pennington County, Keystone — 19 — First Congregational Church —
17 ► South Dakota, Pennington County, Keystone — 17 — First School — Built c. 1895 —
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18 ► South Dakota, Pennington County, Keystone — Flooded with Memories — June 9, 1972 —
19 ► South Dakota, Pennington County, Keystone — The Galena Fire Chronology —
20 ► South Dakota, Pennington County, Keystone — George Washington — 1st President — 1789-1797 —
21 ► South Dakota, Pennington County, Keystone — 453 — Gutzon Borglum — (John Gutzon de la Mothe Borglum) — Born March 25, 1867 – Died March 6, 1941 —
22 ► South Dakota, Pennington County, Keystone — Gutzon Borglum — (John Gutzon de la Mothe Borglum) — Born March 25, 1867--Died March 6, 1941 —
23 ► South Dakota, Pennington County, Keystone — 14 — Halley's Store Icehouse —
24 ► South Dakota, Pennington County, Keystone — 5 — Hayes-Hopkins Supply Company —
25 ► South Dakota, Pennington County, Keystone — 1 — Henry Loomis House —
26 ► South Dakota, Pennington County, Keystone — 16 — Historic Keystone in the early 1940s —
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27 ► South Dakota, Pennington County, Keystone — History of the United States of America —
28 ► South Dakota, Pennington County, Keystone — 12 — Holy Terror Mine —
29 ► South Dakota, Pennington County, Keystone — Island in the Plains —
30 ► South Dakota, Pennington County, Keystone — Keystone Battle Creek Cultural Center — Founded 1984 —
31 ► South Dakota, Pennington County, Keystone — 18 — Keystone School —
32 ► South Dakota, Pennington County, Keystone — 13 — Keystone Trading Company/Halley's Store —
33 ► South Dakota, Pennington County, Keystone — Martha Linde's Special Golden Valley and Hesnard Museum —
34 ► South Dakota, Pennington County, Keystone — 10 — Medical Office of Eugene B. Hultz, M.D. —
35 ► South Dakota, Pennington County, Keystone — (Mount Rushmore) Chronology —
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36 ► South Dakota, Pennington County, Keystone — C — Mountain View Cemetery —
37 ► South Dakota, Pennington County, Keystone — Peter Norbeck —
38 ► South Dakota, Custer County, Keystone — 536 — The Pigtail Bridges —
39 ► South Dakota, Pennington County, Keystone — The Power to Carve a Mountain —
40 ► South Dakota, Pennington County, Keystone — Profile in Granite — Norbeck Byway —
41 ► South Dakota, Pennington County, Keystone — Purchasing The Slaves' Freedom — Gutzon Borglum —
42 ► South Dakota, Pennington County, Keystone — Rushmore Workers —
43 ► South Dakota, Pennington County, Keystone — The Seated Lincoln — by Gutzon Borglum —
44 ► South Dakota, Pennington County, Keystone — Significant Black Hills Native American Sites — Mount Rushmore National Memorial —
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45 ► South Dakota, Pennington County, Keystone — 11 — Site of Ernest "Peg Leg" Haase Blacksmith Shop —
46 ► South Dakota, Pennington County, Keystone — 7 — Site of the McDonald Hotel —
47 ► South Dakota, Pennington County, Keystone — Theodore Roosevelt — 26th President — 1901-1909 —
48 ► South Dakota, Pennington County, Keystone — Thomas Jefferson — 3rd President — 1801-1809 —
49 ► South Dakota, Pennington County, Keystone — 8 — Tom Hoy and the Hoy Drug Store —
50 ► South Dakota, Pennington County, Keystone — Traditional Ecological Knowledge — Mount Rushmore National Memorial —
51 ► South Dakota, Pennington County, Keystone — 15 — U.S. 4th Cavalry Bivouac —
52 ► South Dakota, Pennington County, Keystone — 9 — US Forest Service Icehouse —
53 ► South Dakota, Pennington County, Keystone — "We Are Still Here" — Mount Rushmore National Memorial —
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54 ► South Dakota, Pennington County, Keystone — Wilderness — Black Hills National Forest —
55 ► South Dakota, Pennington County, Keystone — Wilderness — A Special Place —
56 ► South Dakota, Pennington County, Keystone — Wildlife and Fire —
57 ► South Dakota, Pennington County, Keystone — 6 — William and Jennie Franklin —
58 ► South Dakota, Pennington County, Keystone — William Jennings Bryan — 1860-1925 — by Gutzon Borglum —
 
 
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Nov. 10, 2026