Dear Boys: At last I am able to give you the third volume of “The Motor Boys Series,” a line of books relating the doings of several wide-awake lads on wheels, in and around their homes and in foreign lands. The first volume of this series, called “The Motor Boys,” told how Ned, Bob and Jerry became the proud possessors of motor-cycles, and won several races of importance, including one which gave to them, something that they desired with all their hearts, a big automobile touring car. Having obtained the automobile, the lads were not content until they arranged for a long trip to the great West, as told in “The Motor Boys Overland.” On the way they fell in with an old miner, who held the secret concerning the location of a lost gold mine, and it was for this mine that they headed, beating out some rivals who were also their bitter enemies. - Summary by from the preface