The USGS quads for Oahu are offset E-W from the usual grid to cover the island with fewer quads, for instance Schofield Barracks runs from 158-01-30 to 158-09
LoJ however uses the traditional grid thus locating many summits on the wrong map
Look at the entry for Pu‘ulanipō, for example:
From GNIS http://geonames.usgs.gov/pls/gnispublic ... FID:363909
Pu‘ulanipō 363909 Summit Honolulu HI 212006N 1574545W 1194 Koko Head 01-JAN-2000 30-SEP-2003
From LoJ http://listsofjohn.com/PeakStats/Climbers.php?Id=107823
Pu'ulanipō
Elevation : 2,621'
HI Peaks Rank : 81
Counties : Honolulu
Quad : Honolulu
Coords : 21.3318°N, 157.7597°W
Rise : 601'
Saddle : 2,020'
Line Parent : 3150
Proximate Parent : 3150
Isolation : 2.58 miles