I think CDNG only goes to 1974. Here's a listing for the same parameters using the NEIC/PDE database ....

Michael ....

E A R T H Q U A K E D A T A B A S E

FILE CREATED: Mon Jan 21 17:57:44 2002
Circle Search Earthquakes= 16
Circle Center Point Latitude: 35.459N Longitude: 119.984W
Radius: 40.000 km
Catalog Used: PDE
Data Selection: Historical & Preliminary Data

CAT YEAR MO DA ORIG TIME LAT LONG DEP MAGNITUDE IEFM DTSVNWG DIST
NFPO km
TFS

PDE 1975 06 08 101505.50 35.72 -120.20 8 3.70 mb GS .... ....... 34
PDE 1978 11 19 021210.50 35.62 -119.93 5 3.20 MLPAS .... ....... 18
PDE 1979 07 15 090606.60 35.73 -119.82 4 3.30 MLPAS .... ....... 34
PDE 1980 03 10 011042.10 35.61 -119.80 5 3.30 MLPAS .... ....... 23
PDE 1983 05 07 114342.40 35.55 -120.15 13 3.00 MDGS .... ....... 17
PDE 1983 05 11 011449.44 35.53 -120.07 17 3.20 MDS .... ....... 11
PDE 1984 12 21 220916.52 35.48 -119.69 5 2.90 MLGS .... ....... 26
PDE 1988 02 22 074314.10 35.51 -119.73 15 4.30 mb GS 4F.. ....... 23
PDE 1988 09 17 155020.20 35.57 -119.58 39 3.00 MLPAS .... ....... 38
PDE 1990 08 02 010044.80 35.72 -120.24 7 2.70 MLBRK .... ....... 37
PDE 1990 08 28 023831.30 35.72 -120.22 5 2.60 MLBRK .... ....... 36
PDE 1991 02 27 001620.38 35.76 -119.95 10 3.10 MDGM .... ....... 33
PDE 1992 11 07 180429.84 35.78 -119.93 13 3.00 MLBRK .... ....... 36
PDE 1995 04 13 132602.05 35.44 -119.70 5 3.10 MLGS .... ....... 26
PDE 1997 08 10 170130.86 35.51 -120.11 1 2.80 MDGM .... ....... 13
PDE 1999 05 17 001941.40 35.67 -119.71 15 2.80 MLPAS .... ....... 33