She lives in Toronto.

https://www.encyclopedia.com/arts/educational-magazines/harris-dorothy-joan-1931
(biography and more)

Excerpt:

Jonathan's mouse is special. In all three of his titles, The House
Mouse, The School Mouse, and The School Mouse and the Hamster, the
little rodent talks to Jonathan and helps the youngster through trying situations. In The School Mouse and the Hamster, for instance, the
mouse persuades Jonathan that the other class pet, a hamster, needs
goodies and visits. Jonathan and his mouse feed the hamster, and the
mouse exercises with the hamster. Confusion develops when the hamster
has no appetite or energy during the day. In Goodnight, Jeffrey, a
little boy fights going to sleep by playing with his daytime toys,
until he finds a trusty stuffed animal that lulls him into inactivity.
Harris's Don't Call Me Sugarbaby! is based on the true-life story of a
friend's daughter who developed childhood onset diabetes. The book
explores the life-altering changes for the girl and her family as she
copes with a chronic condition.

http://www.google.com/images?um=1&hl=en&biw=1024&bih=576&tbs=isch%3A1&sa=1&q=%22dorothy+joan%22+harris&aq=f&aqi=&aql=f&oq=
(photos and covers)

https://www.worldcat.org/identities/lccn-n79043957/
(synopses)

https://www.google.com/search?q=%22dorothy+joan+harris%22&rlz=1CAJMBU_enUS940&hl=en&source=lnms&tbm=bks&sa=X&ved=2ahUKEwir1M7dh-vuAhUNmeAKHTkFBSw4ChD8BSgBegQIBhAL&biw=1366&bih=649
(synopses)

https://en.wikipedia.org/wiki/Dorothy_Joan_Harris

https://www.google.com/search?rlz=1CAJMBU_enUS940&hl=en&biw=1366&bih=649&tbm=vid&ei=OfkpYOL7AuHl_QbOoKKACA&q=%22dorothy+joan+harris%22&oq=%22dorothy+joan+harris%22&gs_l=psy-ab.3..0i22i30k1l7.12626.15912.0.16166.4.4.0.0.0.0.107.357.3j1.4.0....0...1.1.64.
psy-ab..0.4.355...0i5i30k1j0i30k1j0i7i5i30k1j0i7i30k1.0.ShIsBEqfoiQ
(videos about her books - some are in Spanish)

WRITINGS:

* The House Mouse, illustrated by Barbara Cooney, Frederick Warne
(New York, NY), 1973.
* The School Mouse, illustrated by Chris Conover, Frederick Warne
(New York, NY), 1977.
* The School Mouse and the Hamster, illustrated by Judy Clifford,
Frederick Warne (New York, NY), 1979.

* Don't Call Me Sugarbaby!, Scholastic Canada (Richmond Hill,
Ontario, Canada), 1983.
* Goodnight, Jeffrey, illustrated by Nancy Hannans, Frederick
Warne (New York, NY), 1983.
* Four Seasons for Toby, Scholastic Canada (Richmond Hill,
Ontario, Canada), 1987.
* Even If It Kills Me, aka Melany, Scholastic Canada (Richmond Hill, Ontario, Canada), 1987.
* Speedy Sam, Scholastic Canada (Richmond Hill, Ontario, Canada),
1989.

* No Dinosaurs in the Park, Scholastic Canada (Richmond Hill,
Ontario, Canada), 1990.
Rumpelstiltskin 1991.
* Annabel the Detective, HarperCollins Canada (Scarborough,
Ontario, Canada), 1991.
Annabel the Detective Case of the Mystery Note 1993
Annabel the Detective : The Case of the Birthday Surprise 1993
Cameron and Me 1997

Ellen: Hobo Jungle 2002.
A Very Unusual Dog, 2004.
Ellen #2: The Wishing Time 2004
Ellen #3: The Waiting Time 2006
Ellen #4: A Time For Courage 2006


Lenona.

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