From Wikipedia on Mahaska:
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"Mahaska (archaic Ioway Maxúshga pronounced [mõxu??k?]; contemporary Maxúhga), or White Cloud, (1784 – 1834) was a chief of the Native American Iowa tribe.
Mahaska was born into the Iowa tribe. He became chief at an early age after killing several enemy Sioux to avenge his father’s death by them.
Later Mahaska killed a French trader in an argument; he was arrested and imprisoned in St. Louis, Missouri. After he escaped, he led a raid against the Osage.
Afterward, he decided that his father’s death was finally avenged. Mahaska lay down his arms and adopted the lifestyle of the European-American settlers, building a log home and farming. He refused to let his braves avenge the death of an Iowa chief named Crane at the hands of Omaha Indians in 1833. When several Iowa killed six Omaha warriors, Mahaska assisted in their arrest.
The next year one of the Iowa escaped from Fort Leavenworth and killed Mahaska by shooting him in the back as he sat by his campfire. He was buried along the Nodaway River in Edna Township, Cass County, Iowa.
Chief Mahaska became a symbol to settlers of the virtues of his native lifestyle, and of the possibility of peace between natives and settlers.
Sculptor Sherry Edmundson Fry's earliest public commission was a bronze statue of Mahaska. Recently restored, it still stands on its pedestal in the courthouse square of Oskaloosa, which is the governmental seat of Mahaska County, Iowa, in the southeastern section of the state. At the right of the base is the artist's signature "S.E. Fry, 1907.""
From Geocaching.com datasheet:
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"MH0101 ***********************************************************************
MH0101 DESIGNATION - OSKALOOSA
MH0101 PID - MH0101
MH0101 STATE/COUNTY- IA/MAHASKA
MH0101 USGS QUAD - OSKALOOSA (1968)
MH0101
MH0101 *CURRENT SURVEY CONTROL
MH0101 ___________________________________________________________________
MH0101* NAD 83(1986)- 41 17 41. (N) 092 38 41. (W) SCALED
MH0101* NAVD 88 - 257.990 (meters) 846.42 (feet) ADJUSTED
MH0101 ___________________________________________________________________
MH0101 GEOID HEIGHT- -32.29 (meters) GEOID99
MH0101 DYNAMIC HT - 257.877 (meters) 846.05 (feet) COMP
MH0101 MODELED GRAV- 980,179.8 (mgal) NAVD 88
MH0101
MH0101 VERT ORDER - SECOND CLASS 0
MH0101
MH0101.The horizontal coordinates were scaled from a topographic map and have
MH0101.an estimated accuracy of +/- 6 seconds.
MH0101
MH0101.The orthometric height was determined by differential leveling
MH0101.and adjusted by the National Geodetic Survey in June 1991.
MH0101
MH0101.The geoid height was determined by GEOID99.
MH0101
MH0101.The dynamic height is computed by dividing the NAVD 88
MH0101.geopotential number by the normal gravity value computed on the
MH0101.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
MH0101.degrees latitude (g = 980.6199 gals.).
MH0101
MH0101.The modeled gravity was interpolated from observed gravity values.
MH0101
MH0101; North East Units Estimated Accuracy
MH0101;SPC IA S - 144,130. 571,630. MT (+/- 180 meters Scaled)
MH0101
MH0101 SUPERSEDED SURVEY CONTROL
MH0101
MH0101 NGVD 29 - 257.965 (m) 846.34 (f) ADJ UNCH 2 0
MH0101
MH0101.Superseded values are not recommended for survey control.
MH0101.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
MH0101.See file dsdata.txt to determine how the superseded data were derived.
MH0101
MH0101_MARKER: DB = BENCH MARK DISK
MH0101_SETTING: 30 = GRANITE BASE
MH0101_STAMPING: OSKALOOSA 1934
MH0101_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
MH0101
MH0101 HISTORY - Date Condition Recov. By
MH0101 HISTORY - 1934 MONUMENTED CGS
MH0101 HISTORY - 1948 GOOD NGS
MH0101
MH0101 STATION DESCRIPTION
MH0101
MH0101''DESCRIBED BY NATIONAL GEODETIC SURVEY 1948
MH0101''AT OSKALOOSA.
MH0101''AT OSKALOOSA, MAHASKA COUNTY, IN THE CITY SQUARE PARK, AT THE
MH0101''MAHASKA MONUMENT, AND IN THE NORTHWEST CORNER OF THE GRANITE
MH0101''BASE. A STANDARD DISK, STAMPED OSKALOOSA 1934."