Willow Grove is an area of parkland near Bayport. There is a large area of tangled woodland to one side and a lake. Appearances The Hardy Boys 1. The Tower Treasure References ↑ The Hardy Boys #1 The Tower Treasure (1959) pp44,45 This article is a stub. You can help The Hardy Boys Wiki by expanding it. Retrieved from "https://hardyboys.fandom.com/wiki/Willow_Grove?oldid=6277" Categories: Article stubs Bayport Locations Original locations Community content is available under CC-BY-SA unless otherwise noted.