Gfilm always has such positive suggestions.
Ellen, I don't know what groundwork you've already done but would like to add three small ideas.
First, do you know any young school-age children? If so, ask their teachers if you could read to their classes. Also, approach the school librarian and volunteer to read during story time. Afterwards your book could be tied-in with art and craft activities. Maybe offer a copy of "Flutterby" for the best work of art. This has been successful for children's authors during Book Week. Build that fanbase, make sure a photo goes in the school newsletter!
Second, our local public library has many weekly activities for writers to showcase their work. Discussions, readings, workshops, storytelling and their books are displayed in a glass-fronted cabinet as suggested reading. Libraries have an extensive intranet system so get on first-name basis with the staff so they can recommend you.
Third, if your provincial newspaper or community magazine have a book review section, send (or preferably deliver) them a copy with a bio. Grandparents still read newspapers and favour local recommendations. Everything eventually goes online so word will slowly spread further afield.
"Every story has three sides to it - yours, mine and the facts" Foster Meharny Russell