Phantom Lake YMCA Camp is celebrating 130 years of summer tradition in Mukwonago. The camp started in 1896 as an all-boys camp, with army tents serving as accommodations. Over the decades, new buildings and activities have been added, but organizers say the core ideas of camp remain the same. For some families, Phantom Lake has become a multigenerational tradition. Counselor Harper Blake-Horst first came to camp at 6 years old a connection that …