This benchmark is set into concrete and is in the most western section of the grounds of the Old Russellville Depot - 320 West C Street. The mark is in decent shape - you can tell it has been it by a mower a few times.
From geocaching.com's version of the datasheet:
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"FG1178 ***********************************************************************
FG1178 DESIGNATION - K 25
FG1178 PID - FG1178
FG1178 STATE/COUNTY- AR/POPE
FG1178 USGS QUAD - RUSSELLVILLE WEST (1979)
FG1178
FG1178 *CURRENT SURVEY CONTROL
FG1178 ___________________________________________________________________
FG1178* NAD 83(1986)- 35 16 50. (N) 093 08 05. (W) SCALED
FG1178* NAVD 88 - 107.220 (meters) 351.77 (feet) ADJUSTED
FG1178 ___________________________________________________________________
FG1178 GEOID HEIGHT- -29.10 (meters) GEOID99
FG1178 DYNAMIC HT - 107.119 (meters) 351.44 (feet) COMP
FG1178 MODELED GRAV- 979,684.5 (mgal) NAVD 88
FG1178
FG1178 VERT ORDER - FIRST CLASS II
FG1178
FG1178.The horizontal coordinates were scaled from a topographic map and have
FG1178.an estimated accuracy of +/- 6 seconds.
FG1178
FG1178.The orthometric height was determined by differential leveling
FG1178.and adjusted by the National Geodetic Survey in June 1991.
FG1178
FG1178.The geoid height was determined by GEOID99.
FG1178
FG1178.The dynamic height is computed by dividing the NAVD 88
FG1178.geopotential number by the normal gravity value computed on the
FG1178.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
FG1178.degrees latitude (G = 980.6199 gals.).
FG1178
FG1178.The modeled gravity was interpolated from observed gravity values.
FG1178
FG1178; North East Units Estimated Accuracy
FG1178;SPC AR N - 105,680. 296,780. MT (+/- 180 meters Scaled)
FG1178
FG1178 SUPERSEDED SURVEY CONTROL
FG1178
FG1178 NGVD 29 - 107.212 (m) 351.74 (f) ADJ UNCH 1 2
FG1178
FG1178.Superseded values are not recommended for survey control.
FG1178.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
FG1178.See file dsdata.txt to determine how the superseded data were derived.
FG1178
FG1178_MARKER: DB = BENCH MARK DISK
FG1178_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
FG1178_STAMPING: K-25 1932
FG1178_PROJECTION: PROJECTING 6 CENTIMETERS
FG1178_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
FG1178+STABILITY: SURFACE MOTION
FG1178
FG1178 HISTORY - Date Condition Recov. By
FG1178 HISTORY - 1932 MONUMENTED CGS
FG1178 HISTORY - 1935 GOOD NGS
FG1178 HISTORY - 1984 GOOD NGS
FG1178 HISTORY - 1987 GOOD USPSQD
FG1178 HISTORY - 1987 GOOD USPSQD
FG1178 HISTORY - 1988 GOOD USPSQD
FG1178 HISTORY - 1989 GOOD USPSQD
FG1178 HISTORY - 1989 GOOD USPSQD
FG1178
FG1178 STATION DESCRIPTION
FG1178
FG1178''DESCRIBED BY NATIONAL GEODETIC SURVEY 1935
FG1178''IN RUSSELLVILLE.
FG1178''IN RUSSELLVILLE, 176 FEET EAST OF EAST WALL OF MISSOURI PACIFIC R.R.
FG1178''DEPOT. 66 FEET NORTH OF CENTERLINE OF C ST. 58 FEET WEST OF
FG1178''CENTERLINE OF COMMERCIAL AVENUE. 35.2 FEET SOUTH OF CENTERLINE OF
FG1178''MISSOURI PACIFIC R.R. MAIN LINE TRACK. CONCRETE POST WITH BRONZE
FG1178''TABLET.
FG1178
FG1178 STATION RECOVERY (1984)
FG1178
FG1178''RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1984
FG1178''RECOVERED IN GOOD CONDITION. NOTE, DELETE COMMERCIAL AVENUE, DELETE C
FG1178''STREET. ADD, NORTH COMMERCE STREET, ADD WEST C STREET.
FG1178
FG1178 STATION RECOVERY (1987)
FG1178
FG1178''RECOVERY NOTE BY US POWER SQUADRON 1987 (MFS)
FG1178''RECOVERED IN GOOD CONDITION.
FG1178
FG1178 STATION RECOVERY (1987)
FG1178
FG1178''RECOVERY NOTE BY US POWER SQUADRON 1987 (TWS)
FG1178''RECOVERED IN GOOD CONDITION.
FG1178
FG1178 STATION RECOVERY (1988)
FG1178
FG1178''RECOVERY NOTE BY US POWER SQUADRON 1988 (MS)
FG1178''RECOVERED IN GOOD CONDITION.
FG1178
FG1178 STATION RECOVERY (1989)
FG1178
FG1178''RECOVERY NOTE BY US POWER SQUADRON 1989 (MS)
FG1178''RECOVERED IN GOOD CONDITION.
FG1178
FG1178 STATION RECOVERY (1989)
FG1178
FG1178''RECOVERY NOTE BY US POWER SQUADRON 1989 (TWS)
FG1178''RECOVERED IN GOOD CONDITION."