Sep. 19, 1865 Petersburg Dinwiddie County Virginia, USA
Jul. 1, 1942 Denver Denver County Colorado, USA
Philanthropist. She spent much time, effort, and money building and supporting the Children's Hospital of Denver. She was named honorary Life President of The Children's Hospital in 1938. She was the wife of Denver Post owner Harry H. Tammen.
"Agnes Tammen built "Rancho Tranquilo," an estate designed by architects Merrill and Hoyt with a private, spring-fed, water treatment system (with water rights) in 1930. It was bequeathed to Tammen's niece, Helen Rippey, in 1942. The Rippeys operated a turkey farm on a large parcel that became part of the Genesee Foundation area."