10-18-2017 - Bonanza, ID - Bonanza Cemetery - Graves with Fences and Grave Stones such as these were the exception. Most had simple Wooden Markers. A lot of the Wooden Markers simply said "Unknown".
Link to Photo Without Frame
What you say in your comment about the explanation for the 'unknown' designation may be true. But there were undoubtedly people who died in towns like Bonanza who were transients, with no friends or relatives traveling with them, and who were in every important sense 'unknown' to those tasked with burying them.