The "Northern Valley" lettering looks like either Helvetica Extra Compressed or Helvetica Ultra Compressed, but stretched a bit and sheared to a slanted angle. The "Excavation" letters might be a style of Frutiger.
Some of the Swiss 721, 911, etc. fonts in CorelDRAW might work as a substitute for the Helvetica letters. Humanist 777 is a close of Frutiger.