Fr. Marx kept several albums of postcards from his international tours. Most of the postcards preserved here feature images from Europe and appear to cover Marx's trips there during the 1980s. Others come from Africa, South America, Southeast Asia and the Philippines during the same period. Similarly, the photograph albums reflect very little order and include images from a 1984 population conference in Mexico, an NFP convention in the Philippines in 1981, the 1987 Mexico City Symposium on Human Sexuality and other selected portions of Marx's life and travels. Also available are a sleeve of slides from a presentation on abortion, a folder of loose photographs from an HLI convention in Miami and a family photo collage presented to Marx by an unidentified fifth-grader named Jacqueline.