The Bobbsey Twins on a Houseboat
From the book:"What are you doing, Freddie?" asked Bert Bobbsey, leaning over to oil the front wheel of his bicycle, while he glanced at his little brother, who was tying strings about the neck of a large, handsome dog. "Making a harness," answered Freddie, not taking time to look up. "A harness?" repeated Bert, with a little laugh. "How can you make a harness out of bits of string?" "I'm going to have straps, too," went on Freddie, keeping busily on with his work. "Flossie has gone in after them. It's going to be a fine, strong harness."