Keith Allen Hinrichsen, a native of La Mesa, Calif., was fully devoted to his family, students and church as a History professor at Cerritos College. After 37 years of teaching, his extended family supported him through his own diagnosis and return of prostate cancer. Upon his death, Keith directed support to a variety of charities, including programs that addressed the unmet needs of patients with Alzheimer’s through The Hinrichsen-Thorsen Family Health Fund.