His work is part of the Cooper-Hewitt National Design Museum’s permanent collection, the Denver Art Museum and Columbia University. The New York Times’ art critic Steven Heller profiles Rigsby Hull’s work in his A Century of Design Milestones. And in each of its 40^th, 50^th and 60^th Anniversary issues Communication Arts has cited Thomas’ work as among the most influential in American Graphic Design.

Her writing on design history and visual culture has appeared in Fast Company, PORT, The Architect’s Newspaper and Eye on Design. Her criticism and commentary have been cited in The New York Times, New York Magazine, Dwell, CNN, Eater, Vox and Business of Fashion, among other publications and media outlets. 

As a designer, she works independently across brand identity, editorial and art direction projects, often drawing from archival research and visual history to inform contemporary design systems and print work. Her clients include A24, Herman Miller, Phaidon, HBO and The Whitney Museum, as well as design studios like Pentagram, Interbrand, Mythology and Porto Rocha. 

She publishes Casual Archivist, a newsletter about ephemera, and teaches at Rhode Island School of Design (RISD) and Parsons. In 2024, she was selected as a Young Guns winner by The One Club for Creativity.

She teaches within the School of Graphic Communications Management (GCM), as well as the Master of Digital Media (MDM) program at Toronto Metropolitan University where she helps students connect their technical left brains, creative right brains and entrepreneurial hearts for fulfilling careers in creative industries. Diana is also an advocate for living your most confidently creative life, having recently produced a course for Domestika on the topic. Diana has 150+ published articles in Graphic Arts Magazine, as well as through the RGD. She firmly believes that more problems should be solved by “lip-syncing for your life.”