Hazel Koenig died in Loveland , Colorado in 1975 , followed by her husband Frank in 1980 .
In 1972 the university purchased the remaining 163 acres ( 0.66 km ) of land in the valley from Frank and Hazel Koenig .
Hazel Koenig died in Loveland , Colorado in 1975 , followed by Hazel Koenig 's husband Frank in 1980 .
In 1972 the university purchased the remaining 163 acres ( 0.66 km ) of land in the valley from Frank and Hazel Koenig .