 For this reason, Tracy Philipps, Secretary-General from 1955–1958, did not draw a salary during his period in office.To establish a stable financial basis for its work, IUCN participated in setting up the World Wildlife Fund (1961) (now the World Wide Fund for Nature WWF) to work on fundraising to cover part of the operational costs of IUCN.Also in 1961, the IUCN headquarters moved from Belgium to Morges in Switzerland.