Jan George Mulder, a salesman from Haarlem, left a legacy of over 2000 stereo photographs, more than half originating from his time in French colonial Indochina. Yet not one of them contains a caption or even a hint about the contents. What’s more, Mulder’s life in Vietnam remains something of a mystery. John Kleinen immersed himself in this unique collection, determined to learn more about the images and the man behind them.