[2] He participated in numerous exhibitions from the late 1920s through the 1930s, and won honors from the Pennsylvania Academy and the Brooklyn Museum.
[3] Despite these successes, he did not take advantage of offers from museum curators and art dealers that may have increased his fame.
[3] In the catalog to a 1996 exhibition at the University of California, Berkeley, museum curator James Steward wrote: "The spirit went out of much of his work from about 1940, and although Hagedorn continued to make art throughout most of his life, it often devolved into trivializing depictions of the female nude.
[5] One of Hagedorn's etchings was included in the 2011 exhibition “Francisco Goya: Los Caprichos,” at the Nassau County Museum of Art, New York.
Martha Schwendener, an art critic for The New York Times, described the work, saying it took "Goya’s image of one goblin, representing a corrupt person, cutting another’s toenails, and redrew it to resonate with the Wall Street crash of 1929.