
Northwest Trek Book
1977
ISBN 9780941042000
Discovering Northwest Volcanoes A Learning and Activity Book
1980
ISBN 9780941042031
Discovering Salmon
1984
ISBN 9780941042055
Discovering Marine Mammals
1987
ISBN 9780941042062
Discovery Book for the Seattle Aquarium A Learning and Activity Book
1987
ISBN 9780941042079
Discovering Endangered Species
1990
ISBN 9780941042093
Discovering Mt. Rainier Nature Activity Book
2017
ISBN 9780914019800