Mildred G. Duncan Warnecke was born to Charles Henry Duncan (1873-unknown) and Laura Ella Woolman (1876-1928) in 1902 in Burlington, NJ. She earned her bachelor’s degree in Education from The New Jersey Normal School at Trenton in 1924. She married Rudolph Emil Warnecke (1902-1967), with whom she had three children: Donald Bruce Warnecke (1929-1931), Wuzanne Warnecke (1931-), and Carol Warnecke Harris (1932-). She taught in New Jersey schools in three different locations, specifically in Burlington from 1924-1927, Rutgers Preparatory School in Somerset in the 1930s, and in Westfield from 1942-1946.
Warnecke had been a very active member of Gamma Sigma Nu, where she later befriended Louise Woodruff Bush (class of 1911), whose photo albums also are part of this collection.