The described location for GT1320 is very close to GT1321. They would probably be within 15-20 feet of each other if GT1320 was still there. It's not. The roads are wider than they used to be and the location described from the centerlines places GT1320 under the pavement, if it remains at all. I doubt it.
Published details for Benchmark: GT1320
N 36° 31.900
W 119° 50.700 (NAD 83)
Coordinates may not be exact. Altitude is VERTCON and location is SCALED.
Location: In FRESNO county, CA View Original Datasheet
Designation: R 669
Marker Type: bench mark disk
Setting: set into the top of a round concrete monument
Stability: May hold, but of type commonly subject to surface motion.
Documented History (by the NGS)
Unknown by CGS (MONUMENTED)
01/01/1959 by NGS (MARK NOT FOUND)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1959 1 MI SW FROM CARUTHERS. ALONG MARKS AVENUE, 20 FEET WEST OF THE CENTER LINE OF THE ROAD, IN THE SOUTHWEST CORNER OF THE INTERSECTION OF MARKS AND KAMM AVENUES AND 2 FEET SOUTH OF STATE HIGHWAY SIGN POST. SET IN THE TOP OF A CONCRETE POST. NOTE-- THE ROAD HAS BEEN WIDENED AT THE DESCRIBED LOCATION.
Found details for Benchmark: GT1320
The location for GT1320 was visited on 29 November 2014.
This mark is described as being in the same general location as benchmark PID GT1321. It was described as being destroyed in 1959 by the NGS.
This mark is believed to be destroyed. No new coordinates were taken.