 HISTORY
  CL552/78--CAS18661(1977)-OPR-511-DA-77-ITEMS 4 AND 5 ì
(BP103690); VISIBLE WK (UNCOVS 3FT AS OBSERVED) POSITION SCALED ì
FROM BLUEPRINT IN LAT 38-02-00.5N, LONG 121-46-54.0W(NAD27).
  TP01252/83-84--REV-CLASS III; NOT SHOWN. (ENT 4/88 RWD)