Stratemeyer, Edward: Dave Porter in the Gold Fields. v1. 4 Sep 2014
 

Edward L. Stratemeyer (October 4, 1862 – May 10, 1930) was an American publisher and writer of children's fiction. He was one of the most prolific writers in the world, producing in excess of 1,300 books himself, selling in excess of 500 million copies, and created the well-known fictional-book series for juveniles including The Rover Boys, The Bobbsey Twins, Tom Swift, The Hardy Boys, and Nancy Drew series, among others.

Excerpt
In the present volume are related the particulars of another trip West, taken by Dave and his chums to locate a lost gold mine, willed to Roger Morr’s mother by her brother. The boys had some strenuous happenings, and some of their old-time enemies did all they could to bring their expedition to grief. But Dave showed his common sense and his courage, and in the end all went well.