In 1973, Dolf and Wenda were asked by a relative to guide a safari to Kenya and Tanzania. This became the start of an annual event that would last until 1990. The trips were soon organized by a travel agency and a group of regularly participating people, some of whom have become intimate friends of the guiding couple. Each trip was carefully prepared, with a bibliography sent to the participants. Afterwards a list of all the observed mammals and birds was distributed additionally.
