Selz`s daughter Gabrielle Selz and her husband Peter Selz.
Selz received a Bachelor of Arts from Oberlin College in 1947. Four years later she was given a Master of Arts degree from the University of Chicago.
Selz began her career as an instructor of English at Pomona College in 1955 and held it for two years. In 1966, she took a position of a lecturer of the writing department at Columbia University. Then in 1967, Thalia was appointed an instructor of English at Queens College, where she worked for a year and again in 1970-1971.
Also in 1976, she took the same position at the Northeastern Illinois University. In 1979, Selz was a visiting fiction writer at the University of Missouri. Two years later she held the position of a writer-in-residence at Trinity College, where she served until 1998.
For more than 30 years, she compiled and wrote the biographies and interviewed the artists for the show and catalogue, "Modern Odysseys: Greek American Artists of the 20th Century, Queens Museum of Art 2000."
Selz was a member of the Association for Writing Programs, Greek-American Women's Network, Modern Greek Studies Association and Poets & Writers Inc.
On June 10, 1948 Thalia Selz married Peter Howard Selz, with whom she divorced in August 1965. They have 2 daughters.