The new royal baby boy will be receiving a gift of Canadian-themed childrens' books from Governor-General David Johnston and his wife, who are also inviting people to sign a Web-based book of congratulations for the family.
Kate Middleton, Duchess of Cambridge, gave birth to a son Monday afternoon – a boy who will now be third in the line of succession to the throne.
The Governor-General has set up an electronic signature book, "Royal Baby Wishes," on his website, where people can submit congratulations.
Rideau Hall said the office will print and send all the greetings to the Royal Family in several weeks.
"My wife, Sharon, and I would like to extend our warmest congratulations to Their Royal Highnesses The Duke and Duchess of Cambridge on the occasion of the birth of their son," Mr. Johnston said in a statement.
"Sharon and I have five wonderful daughters and ten delightful grandchildren and know well the elation that a new arrival brings to a young family. We know that this happy event brings great joy not only to Their Royal Highnesses, but to the entire nation as well.
May the years to come with this child be filled with love and pride for all members of the Royal Family."