Sarah (Editor) Mellor, David Alan (Curator); Shalgosky

David Alan Mellor (1948–2023) was a British curator, professor, and writer known for his work in photography and art history. He taught at the University of Sussex until his retirement in 2018 and received major Royal Photographic Society awards for his contributions to the field. The name in the query appears to combine multiple people; Sarah Mellor is a separate author and no clear public record was found for a joint author entry with Shalgosky.