Audiobook: Outdoor Girls in the Saddle

Mrs. Nelson, Betty’s mother, through the death of a relative, has become the owner of a ranch.

The most important thing about this ranch—in the estimation of the girls, at least—is the fact that it was situated right in the midst of a great gold-mining district. How the girls with Mr. and Mrs. Nelson went to the ranch, spending a glorious few weeks in the saddle, and how gold was finally found on the ranch is told of in detail in this volume.

This is book number twelve in the "Outdoor Girls" series. (Summary from the next book)