[5][4] She moved to New York after graduating college, where she worked at the Pratt Institute and took drawing classes in the evenings.

MacLean moved to San Francisco in 1963, where she met Bill Graham who had been her boss at her office job at Allis-Chalmers.

MacLean's style was inspired by imagery of the Medieval Gothic era, such as circular stained glass windows and pointed arches.

[10] During her four-year run at the Fillmore, she rendered posters for Jefferson Airplane, Grateful Dead, Jimi Hendrix, Led Zeppelin, Pink Floyd, Santana, The Allman Brothers Band, The Doors, The Who, and The Yardbirds.

"[2] She was a "driving force" in the San Francisco rock music scene, and her posters were instrumental in promoting The Fillmore Auditorium's success.

[12][13] Her favorite poster was "BG #75" which displays an orange and blue color peacock and its elaborate tail with white and green accents around a human face.

[5][11] MacLean died on February 4, 2020, at age 80, at the Buckingham Valley Rehabilitation and Nursing Center in Newtown, Pennsylvania.