The Sorcerer's Letterbox

Martha Lamon is a freelance writer and researcher based in Huntsville,
Ontario.

One day Jack discovers a note in a small antique wooden box that has
been passed down in his family for generations. The note, which is dated
1483, is from Edward V, who, along with his brother Prince Richard, has
been imprisoned in the Tower of London by their uncle Richard, who wants
to be king. In the note, the young prince is asking for help. Jack
learns that his antique box has magical powers, which enable him to
travel back in time to the Tower. As he attempts to rescue the princes,
he encounters Richard and Tyrell (the man who would eventually kill the
princes) and soon finds himself fighting for his own life.

Readers of this page-turning time-travel adventure get to experience
medieval London and enjoy some interesting characters, such as Meg, a
young girl who survives by stealing food from the Tower and who helps
Jack in his rescue attempt. The well-crafted, intelligently written
story includes an exciting plot, an element of danger, and a satisfying
finish—and just enough British history to inform young readers but not
overwhelm them. Highly recommended.