The Hartmann Collection's main focus is Vietnam, but there is material on Cambodia and Laos, as well as a few items on Burma and Thailand. There are numerous scenes of all parts of Indochina, with particular attention to various important architectural sites. Historical materials emphasize the colonial period. Of particular interest are an extensive collection of portraits of Vietnamese and Cambodian monarchs from the colonial period and a wide and (generally) well-labelled selection of pictures showing the many different ethnic groups in Vietnam.