To understand what this specific "18785x" refers to in your context, it is best to view the source newspaper page directly through a digital archive.

It appears as a potential anomaly or digit string in a 1976 Salt Lake Tribune newspaper archive search.

To help me provide a more relevant piece, could you let me know:

If I have more context, I can help search for specific part numbers or text instances. Salt Lake Tribune Newspaper Archives, Nov 18, 1976, p. 19