Served
- Calvin College (1964-1989)
- Hessel Park CRC (1962-1964)
- University of Illinois Campus Ministry (1962-1964)
- Free University, Amsterdam (1961-1962)
- CRWM-Japan (1959-1961)
- Free University, Amsterdam (1958-1959)
- Miss., Japan (1955-1958)
- Kennedy School of Missions (1953-1955)
- Conrad CRC (1951-1953)