Walter Bäumer was born in 1954 into a family of car enthusiasts. His uncle, also named Walter, was a Mercedes Grand Prix driver and the winner with Huschke von Hanstein of the 1940 Mille Migia driving a BMW 328 with Touring coachwork, and his father, Werner, acted as Walter’s manager and business advisor.
After high school, Walter studied photography, and for many years worked as a fashion photographer and freelance art director for well-known companies in the fashion and cosmetic industries, and magazines such as Esquire, Lucca, Vogue, Style and Playboy. Since 2003 he has worked full time as a Maserati historian and consultant. International Research Maserati was founded in 2008.