This is book #13 in the “Outdoor Girls” series. The girls decide to camp out at a shack along the shores of Rainbow Lake, but when they arrive it has burned to the ground. Who is prowling around the camp at night, and what is the story of a sweet old lady they meet, known as the Old Maid of the Mountains. (Summary by Maria Therese)     [chương_files]  

In this 9th book in the “Outdoor Girls Series”, the girls had befriend an old woman who had been knocked down by an unscrupulous motorcyclist. They later learned the secret tragedy in the life of their little old lady. (Adapted from the next book)     [chương_files]  

This is book #15 in the Outdoor Girls series. Mollie Billette is appointed as the new leader of the Outdoor Girls, replacing Betty Nelson, who has now married Allen Washburn. Dogs start to go missing around Deepdale, with no clues to where they are going. The Girls travel to Foaming Falls, and while staying in a haunted house, they hear strange noises! (Summary by Maria Therese)     [chương_files]  

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)     [chương_files]  

This is the 10th book in the “Outdoor Girls” series. The Hostess House at Camp Liberty having burnt down, the chums find themselves forced to take a much-needed, although not entirely welcome, vacation and had decided to spend it at a romantic spot near the ocean called Bluff Point. The cottage on the bluff had been loaned to the girls by Grace’s patriotic Aunt Mary, who declared that she owed something to the chums for having worked so hard for the good old Stars and Stripes. Mrs. Ford, worn out with war work, had gone with the girls to chaperon them. Bad tidings at first threaten to overwhelm the chums. The Fords received word that Will was seriously wounded “somewhere in France” and later Mollie received a telegram from her mother saying that the twins, Dodo and Paul, had disappeared. (Summary adapted from the next book)     [chương_files]  

In this 7th volume of the “Outdoor Girls” series, the girls spend the summer in a bungalow on Pine Island. The young people accidentally discovered a gypsy cave concealed by underbrush, and succeed not only in rounding up the band of gypsies, but in recovering several valuable articles that had been stolen from the girls. (Summary adapted from the book)     [chương_files]  

This 8th book in the “Outdoor Girls” series, find the girls and boys again at Pine Island, but under very much altered conditions. America had entered the great World War and all the boys but Will Ford have volunteered. Later the boys were called to Camp Liberty, some distance from Deepdale, and the girls conceived the plan of opening a Hostess House for the benefit of the relatives and friends of the boys. While still at Pine Island the girls and boys had come upon a suspicious looking man in the woods Upon finding himself discovered the man had made his escape but in his hurry had dropped a letter which the girls found to their disgust was written in code They decided that the man must have been a German spy. (Adapted from the next book in the series)     [chương_files]  

In this 11th book in the “Outdoor Girls” series, the girls have some very exciting experiences. An old man, Professor Dempsey, by name, who had retired to a little log cabin in the woods to recover his health, had chanced to do the girls a very great favor. Of course the girls were grateful to him and were very much interested when he told them of his two sons who were in the war. Later, when the girls read of the death of his two sons in the paper, they went to the old man’s lonely cabin in the woods, but found themselves too late. According to a friendly neighbor, the old man had become temporarily insane at the terrible news, had wrecked his cabin in an insane frenzy, and disappeared. Later, at Wild Rose Lodge, the girls were frightened several times by a strange apparition lurking in the woods around the lodge and Moonlight Falls, a beautiful fall of water not far from the cottage where the girls were staying. The boys came home from France and helped the girls solve the mystery. (Summary from the next book)     [chương_files]