Bibliografía (19 obras)
Broken stick
2010
Mission Miracles
2007
Mission Pilot: High Adventure in Dangerous Places
2002
Dark light--the John Witcombe story
1996
Nature trails and animal tales
Mission in the clouds
1990
King of the cannibals
1988
Why me, Lord?
Jungle adventurer
1987
When parents get old
1986
The vitality makers
1985
Good people get burned too
1984
He chose to listen
1983
Dark night, brilliant star
1981
Miss Marian's gold
A family guide to Sabbath nature activities
1980
Mamma Stahl and the butterfly girl
Stop, look, and listen
1976
