https://www.tennishistory.com/ru/post/воссоединение-семьи-hazells-streamline 2026-07-31 https://static.wixstatic.com/media/7be843_743a3f0a7d7b426e8981a72abdf2cce9~mv2.jpg Two blue Hazells Streamline wooden tennis racquets from the late 1930s displayed on a wooden stand, illustrating the distinctive triple-shaft design developed by Frank W. Donisthorpe