The National Geodetic Survey provides the current official answer.
Here's the source:
https://www.ngs.noaa.gov/NGSDataExplorer/
Here's the info:
https://www.ngs.noaa.gov/cgi-bin/ds_mark.prl?PidBox=GT1811
Here's how to read it:
https://www.ngs.noaa.gov/DATASHEET/dsdata.pdf

This is the top of the data record generated today:

PROGRAM = datasheet95, VERSION = 8.12.5.3
1 National Geodetic Survey, Retrieval Date = JULY 17, 2019
GT1811 ***********************************************************************
GT1811 DESIGNATION - WHITNEY
GT1811 PID - GT1811
GT1811 STATE/COUNTY- CA/INYO
GT1811 COUNTRY - US
GT1811 USGS QUAD - MOUNT WHITNEY (1994)
GT1811
GT1811 *CURRENT SURVEY CONTROL
GT1811 ______________________________________________________________________
GT1811* NAD 83(1992) POSITION- 36 34 42.89133(N) 118 17 31.18182(W) ADJUSTED
GT1811* NAD 83(1992) EPOCH - 1991.35
GT1811* NAVD 88 ORTHO HEIGHT - 4421.0 (meters) 14505. (feet) VERTCON
GT1811 ______________________________________________________________________
GT1811 GEOID HEIGHT - -25.216 (meters) GEOID12B
GT1811 LAPLACE CORR - -8.54 (seconds) DEFLEC12B
GT1811 HORZ ORDER - SECOND
GT1811
GT1811.The horizontal coordinates were established by classical geodetic methods
GT1811.and adjusted by the National Geodetic Survey in March 1994.
GT1811.
GT1811.The NAVD 88 height was computed by applying the VERTCON shift value to
GT1811.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
GT1811
GT1811.Significant digits in the geoid height do not necessarily reflect accuracy.
GT1811.GEOID12B height accuracy estimate available here.
GT1811
GT1811.The Laplace correction was computed from DEFLEC12B derived deflections.
GT1811
GT1811. The following values were computed from the NAD 83(1992) position.
GT1811
GT1811; North East Units Scale Factor Converg.
GT1811;SPC CA 4 - 638,407.861 2,063,362.492 MT 0.99994110 +0 25 20.6
GT1811;SPC CA 4 - 2,094,509.79 6,769,548.44 sFT 0.99994110 +0 25 20.6
GT1811;UTM 11 - 4,048,901.365 384,409.209 MT 0.99976461 -0 46 12.1
GT1811
GT1811! - Elev Factor x Scale Factor = Combined Factor
GT1811!SPC CA 4 - 0.99931061 x 0.99994110 = 0.99925175
GT1811!UTM 11 - 0.99931061 x 0.99976461 = 0.99907538
GT1811
GT1811: Primary Azimuth Mark Grid Az
GT1811:SPC CA 4 - WHITNEY AZ MK 147 09 47.4
GT1811:UTM 11 - WHITNEY AZ MK 148 21 20.1
GT1811
GT1811_U.S. NATIONAL GRID SPATIAL ADDRESS: 11SLA8440948901(NAD 83)
GT1811
GT1811|---------------------------------------------------------------------|
GT1811| PID Reference Object Distance Geod. Az |
GT1811| dddmmss.s |
GT1811| GT1812 MT WHITNEY CAIRN 5.610 METERS 01633 |
GT1811| GT1813 WHITNEY 5.530 METERS 01708 |
GT1811| GT0238 K 72 3.805 METERS 03645 |
GT1811| GT1801 CORCORAN MOUNTAIN APPROX. 7.7 KM 1422438.0 |
GT1811| DA9453 WHITNEY AZ MK 1473508.0 |
GT1811| GT1808 MT WHITNEY SMITHSONIAN HOUSE 26.000 METERS 25707 |
GT1811| GT0239 U 43 3.004 METERS 32209 |
GT1811| GT1807 MT KEITH APPROX.14.3 KM 3410702.2 |
GT1811| GT1809 PLAQUE NEAR WHITNEY 3.002 METERS 35737 |
GT1811| GT1810 14502 2.982 METERS 35753 |
GT1811|---------------------------------------------------------------------|
GT1811
GT1811 SUPERSEDED SURVEY CONTROL
GT1811
GT1811 NAD 83(1986)- 36 34 42.88215(N) 118 17 31.17367(W) AD(1984.00) 2
GT1811 NAD 27 - 36 34 43.11320(N) 118 17 27.85660(W) AD( ) 2
GT1811 NGVD 29 (07/19/86) 4419.1 (m) 14498. (f) VERT ANG
GT1811
GT1811.Superseded values are not recommended for survey control.
GT1811
GT1811.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
GT1811.See file dsdata.pdf to determine how the superseded data were derived.
GT1811


Dale B. Dalrymple