64 books
1962 pub |72 pages
1966 pub |72 pages
1968 pub |20 pages
1968 pub |72 pages
1970 pub |36 pages
1971 pub |36 pages
1974 pub |32 pages
1975 pub |72 pages
The Bear Detectives
1975 pub |48 pages
1978 pub |48 pages
1978 pub |32 pages
1980 pub |68 pages
1980 pub |40 pages
1981 pub |32 pages
1982 pub |32 pages
1983 pub |32 pages
1984 pub |192 pages
1984 pub |32 pages
1985 pub |32 pages
1985 pub |48 pages
1986 pub |32 pages
1987 pub |32 pages
1988 pub |32 pages
1989 pub |32 pages
1990 pub |32 pages
