Dorothy Z. Seymour has written books under this name and under her current name, Dorothy Jane Mills. Her latest baseball book, Chasing Baseball (McFarland 2010) appears under the name Dorothy Seymour Mills.
Born in 1928 in Cleveland, Mills worked with her late husband, Dr. Harold Seymour, on the 3 books of baseball history that Oxford University Press published under his name 1960-1990. In her autobiography,A Woman's Work (McFarland 2004), MIlls revealed that she was actually Seymour's co-author.
During her teaching career and afterwards as a a Boston editor and later a freelance, Mills also published a dozen children's books, co-authored a book on organic farming with Paul Keene,wrote a vegetarian cookbook and three historical novels. In baseball she became involved with promoting women's interests, and the Women's Baseball League honored her in 2001. She belongs to AWSM, is an active member of the Society for American Baseball Research (which awarded her its first Seymour Medal), attends and speaks at conventions, is listed in three Who's Who volumes, gives presentations to interested groups about her work, acts as a consulting editor, appeared in a historical film on umpiring,