In 1926, Blackshear began teaching art history and studio courses at SAIC to help support herself and continued to do so until retiring in 1961 [REF].
While at SAIC, Blackshear supplied the analytical drawings for two of Helen Gardner's books, Art Through the Ages (1926)-one of the earliest American art history textbooks to incorporate non-Western art-and Understanding the Arts (1932) [REF].