Thirty-two letters from Congreave to his father Wilberforce, written during Congreave's school and college years and describing summer fishing trips around New England with his maternal uncle Socrates Whipple. These letters describe materials used in fly fishing during these years, especially materials for tying artificial flies. The letters also contain exquisite, detailed, hand-drawn illustrations of various artificial flies, which Congreave either drew himself or acquired from other sources and then sent to this father.