| title | media type | ISBN-13 | year of publication |
|---|---|---|---|
| Billy Learns Karate | Library Binding | 978-0-03-016601-3 | 1976 |
| Bobby and Boo, Boy from Outer Space | Hardcover | 978-0-03-021546-9 | 1978 |
| Halloween With Morris and Boris/Filmstrip, Cassette, Study Guide | Film | 978-0-07-481384-3 | 1986 |
| Little New Kangaroo | Hardcover | 978-0-437-86010-1 | 1975 |
| Little New Kangaroo | Library Binding | 978-0-02-793220-1 | 1973 |
| Log and Admiral Frog | " | 978-0-06-026546-5 | 1961 |
| Morris and Boris | Hardcover | 978-0-437-85880-1 | 1976 |
| Morris and Boris at the Circus | Paperback | 978-0-06-444143-8 | 1990 |
| Morris and Boris at the Circus | Hardcover | 978-0-06-026477-2 | 1988 |
| Morris Goes to School | Paperback | 978-0-06-444045-5 | 1983 |
| Morris Goes to School | School & Library Binding | 978-0-8085-3291-0 | 1983 |
| Morris Goes to School | Hardcover | 978-0-437-90071-5 | 1971 |
| Morris Goes to School | Paperback | 978-0-06-026547-2 | |
| Morris Is a Cowboy | Hardcover | 978-0-06-026555-7 | 1958 |
| Morris the Moose | Paperback | 978-0-06-444146-9 | 1991 |
| Morris The Moose | School & Library Binding | 978-0-8335-6999-8 | 1991 |
| Morris the moose | Hardcover | 978-0-06-026475-8 | 1989 |
| Morris The Moose | " | 978-0-06-026565-6 | 1959 |
| My Googoo | " | 978-0-03-046331-0 | 1979 |
HarperCollins · Holt McDougal · Littlehampton Book Services Ltd · Macmillan · McGraw-Hill · Turtleback Books