[3][1] Caswell worked part-time at the University of Chicago as assistant bibliographer for South Asia while taking MLIS courses, where she met Samip Mallick.
[7] As part of a course assignment she and a group of students developed a visual resource for dismantling white supremacy in archives.
[8][9] Courtney Dean, Head of the Center for Primary Research and Training at UCLA, referred to Caswell's work in this area as "sea change in the profession.
"[10] Caswell's 2014 book, Archiving the Unspeakable: Silence, Memory, and the Photographic Record in Cambodia examined the legacy of the Khmer Rouge.
[11][12] It was awarded the Society of American Archivists' Waldo Gifford Leland Award in 2015 with the review committee noting it "succeeds in its mission to 'challenge archivists to embrace their own power to counter the silences embedded in records, particularly records that document human rights abuse'.