"Symbolic Abstraction" was the term Hagedorn used to reference his work, which spanned the 1950s to the 21st century. He employed the mediums of painting, drawing, watercolor and gouache. Through the decades the connective tissue throughout his output was his vivid colors, forms, and shapes. His work relates all these elements in the search  for a connection between the human  system, spirit, and the world it simultaneously reflects and creates. 

The Anita Shapolsky Gallery in New York City is presenting a multifaceted group of abstract paper works by 27 artists the gallery has exhibited over the years. Paper experimentation shows the dichotomy between planning aspects in art and free form automatic drawing. These works show great technical skill which brings the artists visions to life. The works gives incredible insights into their diverse approaches and the timelessness of their art.