DancingDan

Interesting! The station recovery notes above are actually on the SE side of down town Tucson whereas the disc I have discovered is on the SW side of Tucson which is many miiles away. The arrow actually points in the direction of the station? I will try and find the station in that direction. There is nothing recorded as a station in the vicinity

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I took a digital picture of the marker. It does have C.W.A. and E3 and below the E3 there is an arrow symbol and right below the arrow symbol there is an obscured stamp that ends with 0.1 so maybe that is the NO.1 mark you are referring to. The marker is definitly in Pima County.

The inscription says" U.S. Coast & Geodetic survey reference mark"

While geocaching I found a NGS disc with a description "E3" with a year of 1935. It is in very good condition cemented in rock under the branches of a mesquite bush. I tried finding it in the NGS datasheet records for Pima County Arizona but it doesn't seem to be recorded. What steps should I take from here to complete a recovery?