This benchmark is located in the first wall on the right side of the north entry of the Pope County Courthouse. From the National Register application:
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"The dominant building in the Russellville Downtown Historic District is the Pope County Courthouse (PP00213) at 100 West Main Street. This four story brick building was constructed in 1931. Designed by H. Ray Burks, architect of many of Arkansas's courthouses, the building features elaborate Art Deco detailing typical of public buildings of the era."
From Geocaching.com's copy of the datasheet:
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"FG1179 ***********************************************************************
FG1179 DESIGNATION - L 25
FG1179 PID - FG1179
FG1179 STATE/COUNTY- AR/POPE
FG1179 USGS QUAD - RUSSELLVILLE WEST (1979)
FG1179
FG1179 *CURRENT SURVEY CONTROL
FG1179 ___________________________________________________________________
FG1179* NAD 83(1986)- 35 16 42. (N) 093 08 02. (W) SCALED
FG1179* NAVD 88 - 107.844 (meters) 353.82 (feet) ADJUSTED
FG1179 ___________________________________________________________________
FG1179 GEOID HEIGHT- -29.10 (meters) GEOID99
FG1179 DYNAMIC HT - 107.741 (meters) 353.48 (feet) COMP
FG1179 MODELED GRAV- 979,684.4 (mgal) NAVD 88
FG1179
FG1179 VERT ORDER - FIRST CLASS II
FG1179
FG1179.The horizontal coordinates were scaled from a topographic map and have
FG1179.an estimated accuracy of +/- 6 seconds.
FG1179
FG1179.The orthometric height was determined by differential leveling
FG1179.and adjusted by the National Geodetic Survey in June 1991.
FG1179.WARNING-Repeat measurements at this control monument indicate possible
FG1179.vertical movement.
FG1179
FG1179.The geoid height was determined by GEOID99.
FG1179
FG1179.The dynamic height is computed by dividing the NAVD 88
FG1179.geopotential number by the normal gravity value computed on the
FG1179.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
FG1179.degrees latitude (G = 980.6199 gals.).
FG1179
FG1179.The modeled gravity was interpolated from observed gravity values.
FG1179
FG1179; North East Units Estimated Accuracy
FG1179;SPC AR N - 105,430. 296,850. MT (+/- 180 meters Scaled)
FG1179
FG1179 SUPERSEDED SURVEY CONTROL
FG1179
FG1179 NGVD 29 - 107.844 (m) 353.82 (f) ADJ UNCH 1 2
FG1179
FG1179.Superseded values are not recommended for survey control.
FG1179.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
FG1179.See file dsdata.txt to determine how the superseded data were derived.
FG1179
FG1179_MARKER: DB = BENCH MARK DISK
FG1179_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
FG1179+WITH SETTING: PAVEMENT
FG1179_STAMPING: L-25 1932
FG1179_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
FG1179+STABILITY: SURFACE MOTION
FG1179
FG1179 HISTORY - Date Condition Recov. By
FG1179 HISTORY - 1932 MONUMENTED CGS
FG1179 HISTORY - 1935 GOOD NGS
FG1179 HISTORY - 1984 GOOD NGS
FG1179 HISTORY - 1987 GOOD USPSQD
FG1179 HISTORY - 1987 GOOD USPSQD
FG1179 HISTORY - 1989 GOOD USPSQD
FG1179 HISTORY - 1989 GOOD USPSQD
FG1179 HISTORY - 1989 GOOD USPSQD
FG1179 HISTORY - 1990 GOOD USPSQD
FG1179
FG1179 STATION DESCRIPTION
FG1179
FG1179''DESCRIBED BY NATIONAL GEODETIC SURVEY 1935
FG1179''IN RUSSELLVILLE.
FG1179''IN RUSSELLVILLE, BRONZE TABLET IN EAST STONE SIDEWALL OF STEPS TO
FG1179''SOUTH ENTRANCE TO POPE COUNTY COURTHOUSE. 72 FEET WEST OF CENTERLINE
FG1179''OF ARKANSAS AVENUE. 67 FEET NORTH OF CENTERLINE OF MAIN ST., 20.2
FG1179''FEET EAST OF CENTERLINE OF MAIN ENTRANCE. 3.7 FEET ABOVE BOTTOM STEP.
FG1179
FG1179 STATION RECOVERY (1984)
FG1179
FG1179''RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1984
FG1179''RECOVERED IN GOOD CONDITION.
FG1179
FG1179 STATION RECOVERY (1987)
FG1179
FG1179''RECOVERY NOTE BY US POWER SQUADRON 1987 (MFS)
FG1179''RECOVERED IN GOOD CONDITION.
FG1179
FG1179 STATION RECOVERY (1987)
FG1179
FG1179''RECOVERY NOTE BY US POWER SQUADRON 1987 (TWS)
FG1179''RECOVERED IN GOOD CONDITION.
FG1179
FG1179 STATION RECOVERY (1989)
FG1179
FG1179''RECOVERY NOTE BY US POWER SQUADRON 1989 (MS)
FG1179''RECOVERED IN GOOD CONDITION.
FG1179
FG1179 STATION RECOVERY (1989)
FG1179
FG1179''RECOVERY NOTE BY US POWER SQUADRON 1989 (TWS)
FG1179''RECOVERED IN GOOD CONDITION.
FG1179
FG1179 STATION RECOVERY (1989)
FG1179
FG1179''RECOVERY NOTE BY US POWER SQUADRON 1989 (LDM)
FG1179''RECOVERED IN GOOD CONDITION.
FG1179
FG1179 STATION RECOVERY (1990)
FG1179
FG1179''RECOVERY NOTE BY US POWER SQUADRON 1990 (LDM)
FG1179''RECOVERED IN GOOD CONDITION."